A guide to the energy of the Earth - Joshua M. Sneideman
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- Опубликовано: 12 июл 2024
- View full lesson: ed.ted.com/lessons/a-guide-to-...
Energy is neither created nor destroyed - and yet the global demand for it continues to increase. But where does energy come from, and where does it go? Joshua M. Sneideman examines the many ways in which energy cycles through our planet, from the sun to our food chain to electricity and beyond.
Lesson by Joshua M. Sneideman, animation by Marc Christoforidis.
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When you here because of online school and you have been working on it for hours and you are struggling to do it on time
felt that
same here
I hate that
The struggles
lol
Okay everyone.... Be honest you're here because of online school right?
Yep..
Yep 😂
Mayyyyybe😳
yeah...
Yess
This is for Nathan Hadland. He was asking bout solar energy: ed.ted.com/lessons/why-aren-t-we-only-using-solar-power-alexandros-george-charalambides Let us know what you think!
Limited? Yes, but HUGE! Just the Sahara Dessert gets hundreds of times more energy în the form of sunlight than humanity consumes! That's just one dessert and it's just sunlight. There's also Wind, geothermal, Tides, ocean currents etc. But we can also get a lot of energy from nuclear sources. Fusion has probably the greatest potential. But even modern uranium fission îs great. Uranium fission îs UNJUSTLY demonized. But there are other kinds of fissions, like Thorium.
after watching this, I realized I really didn't understand what energy was all along until now
Silva Hawk please
*its ki-* nvm
That's right , different from our social life 🌞
ted ed...
you are a growing but big channel with so mucke knowledge. you have taught me about many new facts since 2016. you helped me in many questions and made me love science. hope you never stop this.
special thanks to you...
💖Happy to hear that!🙂
200,000 views WOW - amazing - thanks for watching y'all
May I get the images?
Um 😐 👂🙀💄🙀💄💍🤘👉👐🤝✌️🤟👈😽🙌🙀👊✊👹😺👎👐👈👹😸👎✋👎👹🙀✊😹😺👎🤞✊😺😹💀👎🤞✋👹💀🤞✋👹😽✋🤞😹👎✊😹👹✋👎🙀😹👎🤞👹🎃👎✋🤞🎃✋👹👎🎃🙀👹🎃🤞🙀✊✋😹👎🤞💀😿👎✊✋😿✊✋👎😽🤞👹😺🙀👎✊😺😽👎👎😺😿👎🤞🤙😿😺🤙👎😿🤞✋☠️✋✊🤞😺🤙👎✊🙀☠️✊🤙☠️🙀👎✊👎✊🤞☠️👎✊😺🙀👎✊🤙☠️👎🤙☠️😺🤞🤙🙀👎🤙☠️😸👎💀🤞💀🤞✊🙀👺🤞💀💀🙀🤙💀👎🤙✊🙀👎☠️🤙🙀👎✊🤞☠️😿✋🤞👽👎🤜🤙😿👽🤡✋🤛👽🤞👊🤞😸🤙🤛☠️😿👎🤙😸🤡🤞🤙👺🤙🤞😿☠️😸🤙🤞🙀😾👎✋💀👹✊✋🙌😺👹🤞✋👺😻✊🤞✋😸😺✊👎✊👐🙀👎😼👐✊✋😿🙌💍💀😿👈👆👏💀👉✋😽🙌🎃🙌👶👧👏🎃🧓👱♂️😺😽👱♂️🎃😽👧👦🙀😹👤🗣😿🎃👂👧😹👹👨👣👹🙀👨👂💋😺🙀💍👂👂👧😺😽💍👂👧😺😹🤙👧👹💄😺👅👧🖕🤙😺😹👹💄👃👹👾👁👃☠️👹👁🗣👹😸👣👃😺😹👂👃👹😺💋🧠🙀👹👂👱♀️😹🙀🧠👣👹🙀👨💄😿😺🙀🧠👱♀️🧠🙌☠️🙌👃👃👃👃👃👃👃👃😿🙀👂💀😽🙌✋🖐👏😽🖐👉👂😽👏👆💍👉👆😼👏💍✋💀😽💍👆😿🙌👈✋🙌🙌💀😽👈💍💀👆👏👊👈💀😽👏💀🙌😽👈✋👐👏👆💍✋👈👆👊💍👆💀😽✋👈👆💀🙌💍👆😽
Fran the Gameboy ..what?
LPS DragonLair it is lmao
@Brendin Huynh 560,000 now
Really well done video. I will be showing this to my 6th graders today as part of our unit on renewable and non-renewable energy sources. This video was great in explaining things very simply. Yes, I do wish nuclear energy and hydrogen fuel cells were mentioned. A possible video idea in the future would be to make a video on all the renewable and non-renewable energy sources and the pros and cons of each. Thank you again for a great educational piece. Kudos!
This is very knowledgeable and eye-opening makes me think about the reason we're trying to go to space is probably to find a new source of energy it's why we bring back all those moon rocks
The animation is amazing as always!
concise and informative. loved it
I binge watch more ted-ed than Netflix and Apple+ combined!
Thank you for this awesome video!!
God is energy, and energy is our god. The human soul is nothing more than pure energy, and through it the gods speak to us all. Dimentional entity consisting of energy. If you think about it when you pray, all you're doing is projecting your thoughts, via the soul, to the gods. Though as energy they power your every movement, the idea behind it is your own free will. If this makes sense to anyone else we can talk about it.
I'm a Christian, and a scientist. It's one thing to maintain faith within reason, and another to blindly ignore large accumulations of data. Believing in God and being ignorant should not be the same thing.
THIS IS ONE OF MY MYSTHICAL BELIEFS. EVEN LOVE AND CONSCIOUSNESS FOR ME IS AN ENERGY
So the secret to gain the most energy is to eat grass..
Sadly we cant digest that. So, sadly not.
oMg ArE yOu FoR rEaL
@@seahorseys6190 sounds like fake news to me. You just want to hog all the free energy for yourself!
@@shock_n_Aweful maybe 😏
This video looks so nice explaned like that, it's different from our social reality. ❤👏
For the people that got sent here by teachers and also look at the transcript, I copied most of it from there. Like everything from the transcript.
Notes:
- Energy is a physical quantity that follows precise natural laws. It is neither created nor created and takes different forms such as kinetic or potential energy.
- Earth Physical Systems; the atmosphere, hydrosphere, lithosphere, and biosphere. During any energy transfer between them, some are lost to their surroundings. As heat, light, sound, vibration, or movement.
- Our planet's energy comes from internal and external sources. Geothermal energy from radioactive isotopes and rotational energy from the spinning of the Earth are internal sources of energy.
- While the Sun is the major external source, driving certain systems, like our weather and climate. Sunlight warms the surface and atmosphere in varying amounts, and this causes convection producing winds and influencing ocean current.
___________________________________
The Sun is also the major source of energy for organisms.
~ Infrared radiation, radiating out from the warmed surface of the Earth, gets trapped by greenhouse gases and further affects the energy flow. ~
- We release this food energy using chemical reactions, like combustion and respiration. We release this food energy using chemical reactions, like combustion and respiration. At each level in a food chain, some energy is stored in newly made chemical structures, but most are lost to the surroundings, as heat, like your body heat, is released by your digestion of food.
- Coal, oil, and natural gas, which contain energy that plants captured from sunlight long ago and stored in the form of carbon. When we burn fossil fuels in power plants, we release this stored energy to generate electricity. To generate electricity, heat from burning fossil fuels is used to power turbines that rotate magnets, which, in turn, create magnetic field changes relative to a coil of wire, causing electrons to be induced to flow in the wire.
- Electrons can also be induced to flow by direct interaction with light particles, which is how a solar cell operates. Other renewable energy sources, such as wind, water, geothermal, and biofuels can also be used to generate electricity.
Finishing note: Global energy demand is increasing, but the planet has limited energy resources to access through complex energy infrastructure. As populations rise, alongside rates of industrialization and development, our energy decisions grow more and more important. Access to energy impacts health, education, political power, and socioeconomic status. If we improve our energy efficiency, we can use our natural resources more responsibly and improve the quality of life for everyone.
thx :3
@@MrChentefox np
THNQS PH4G
Amazing explanations
i had to watch this because of online school. very helpful.
Yeah!
Very informative video and it really serves the purpose of showing it to my students!
this is a great video.
Good explanation 👍 thanks 😊👍
Nice video, thank you !
TED ED IS REALLY..... FANTASTIC 😍
Ted Ed is my favorite channel ❤
Great video thanks
Loved this video, and the animation!
Very nice and neatly explained lesson. Thanks :)
I really like this video, one of my favorite concepts to think of.
me too
Nice video thank you for reminding us 🥇🏅🎖️👍🏻👍🏻👍🏻👍🏻👌🏻👌🏻👌🏻👌🏻
Good video!
esse video e muito bom
It's just an amazing animation and research work. Everything seems very clear and easy to understand, even for a young child. Excellent video.
Thanks. You probably would like my books for kids. www.amazon.com/Joshua-Sneideman/e/B00NMWS9BA
Awesome video
Its ....................
Thank you Ted ed for making this video, and please can i ask a question that " How do wind turbines work ?( i came from Vietnam so if there are any word wrong , please forgive me:( )
A turbine is a turbine is a turbine. Wind turbines essentially have a huge magnet surrounded by copper coils, when the blades turn the magnet turns, when the magnet turns the electrons in the copper(matalic bonding) are excited by the changing magnetic field and and induced to flow. Hence electricity. Same is true of hydro turbines, same is true of how nuclear and coal plants use steam to turn turbines with magnets!
Turbines are the same as almost all power plants except solar - inside the turbine is a giant coil of copper with magnets spinning around the outside. The spinning blades spin these parts which cause electrons to flow, the faster they spin the faster the electrons move etc etc. Hydro uses the same spinning magnets, coal heats water to spin magnets, natural gas heats water to spin magnets, nuclear heats water to spin magnets etc etc that is what a generator does. Generates electricity through the effect of spinning magnets around tightly wound copper coils.
We had to annotate notes on this video for homework, and I still have now idea what I'm writing
Ever figure it out?
hey its been a year have you figured it out
It’s been 2 years have you figured it out? Or YOUR STILL IN IT (if you’re even alive at this point
its been 3 years did you figure it out
its been 4 years you good bro?
2:58 fracking
3:05 but fossil fuels are used to power our transport, for heating and cooking, to produce plastics, cosmetics, medicines, and other chemicals too.
Thanks Mrs Duncan
That was lovely.
Thanks, MuffinDemons! We're glad you stopped by.
Thank you - check out some of my books - www.amazon.com/Joshua-Sneideman/e/B00NMWS9BA
@@JoshAsks OH, I just realized you are the educator that came up this this idea. Well done awesome idea to talk about
In minute 2:29 is the answer for the Paleo Diet, eat producers is to eat lower on the food chain.
Thanks for the video.
That would actually be a vegan diet. Eating only producers.
Bryn Walker yap, my bad, but let me eat a little of primary consumers in the paleo :)
very informative
either increase energy input or optimize energy output to meet demands; most politicians focus on increasing energy input
It’s not created nor destroyed.
Nuclear energy: hold my beer
So, the thing is, all of this this is great. but with energy demands so high, we can do something called "cold fusion."
Cold fusion is a hypothesized type of nuclear reaction that would occur at, or near, room temperature. It is also known as LENR, which stands for low-energy nuclear reactions. Cold fusion is a field of condensed matter nuclear science and describes a form of energy generated when hydrogen interacts with various metals like nickel and palladium. The idea behind cold fusion is that fusion could occur at much lower temperatures, making it feasible as an energy source on Earth.
Wow Ted, you sure are ramping up the audience interaction!
TED-Ed is here for our community, TRIMISIS! We're glad you noticed. Thanks for stopping by.
@@TEDEd WHICH DONT DO ANYMORE
Thank you Kanye very cool
Neat.
Thanks, Grilled Salt! If you have other ideas for lessons, you should tell us about them. Check out our open nomination form: ed.ted.com/nominate_an_educator
Glad you liked it - thanks - www.amazon.com/Joshua-Sneideman/e/B00NMWS9BA
not funny
@Cody what do you mean?
i got this as a school assignment and im under quarantine, so i can comment when im meant to be in my school account haha
So, what happens to the heat energy after our bodies eat and burn the energy from food?
Can you say something about "Rotational Energy" being an internal energy source for the earth? Do you mean wind and tide....or something more?
AND THE GRAVITATIONAL ROTATION ITSELF IS ROTATIONAL ENERGY WHICH IS INTERNAL
Great animation, but one thing bothers me. In 3:07 there is cooling tower with a furnace inside and as far as I know that is not how the cooling towers operate?
When in 2014 they edited better than some youtubers in 2020
Why no discussion on nuclear energy options?
Zac Zjuerg, I take responsibility for that. Somehow in the excitement of writing the script it really didn't occur to me that I had missed Nuclear. Then in all the edits same. On the day it was released I looked at it and hit myself in the head and said I clearly missed the mark on that. Unfortunately the train had left the station. It absolutely should have been part of the discussion.
josh sneideman hey fair enough, just wasn't sure if there was a specific reason for the omittance. Thank you for the timely response!
zac zjuerg Yup. My bad. not intentional. Thanks for watching the video.
Please do a new one including Nuclear :)
So true so true
Since we can get energy from the Sun, either directly or indirectly through the fossil fuels, So is Earth, as a system, gaining energy as time is passing?
this video is important
What an excellent animation/presentation!
It was a pleasure to watch
역시 TED예요!
teacher making me watch for school :P
2:42
oh this is a great educational veidio
The next major question is how do we use energy coming from renewable resources in a greater quantity. It will have be be an economic and political move back by those who believe independent producing America, environmentalists, and industries.
The ring structure shown is D-Altrose (a stereoisomer of glucose). For the proper structure of glucose C2 hydroxyl should be down, C3 hydroxyl should be up, and C4 hydroxyl should be down.
Awesome lesson for students: HOW MUCH ENERGY DO YOU CONSUME - www.energy.gov/articles/how-much-do-you-consume
THANKS ZADDY
Energy is all around us.
Bruh the fact that everyone is here from science class doesn’t make sense, I’m in Italy and we received this project too
So, I have a question:
We all know that most of our society's electricity is induced through the burning of various fossil fuels (unless you're Germany -- kudos to you). The most efficient energy production mechanisms however are not mechanical combustion engines, but instead are the biochemical reactions that drive life. We "spend" electricity in our society with just about everything modern, and sometimes we spend electricity so that we can exercise.
Why isn't this the other way around? People want to exercise, which is great, but why aren't fitness studios designed to introduce energy back into the system, rather than expend it? I've seen some ballpark estimates put this at about 100 W from a bicycle generator. I'm curious why this isn't "a thing" -- is there a practical reason this hasn't been done? I'm not an engineer/physicist so I don't know the practicality of these sorts of ideas.
Great brainstorm, thestrangejames! Thanks for sharing it with us. I would be willing to bet there's an expert (engineer/physicist) out there that can help us answer some of these questions. Maybe they could even do a Lesson for us. Do you know of anybody? If so, you can tell us about them here: ed.ted.com/nominate_an_educator We'd be totally down to think about these questions and work with somebody to help explain them.
Also, I thought you'd like this lesson too: ed.ted.com/lessons/biofuels-and-bioprospecting-for-beginners-craig-a-kohn Let us know what you think!
Probably because the amount of energy produced by something like a fitness studio would be trivial enough to not be worth mentioning. 100W is nothing compared to the several megawatts a power plant produces. Also electricity needs to be produced in just the right amounts needed at the time it is being used since it's difficult to store.
A better solution would be for people to stop getting out of work, taking the elevator down to the ground floor, and getting in their car to go to the fitness studio where they then use the stair-climbing machine and exercise bikes...
Additional issues would be the COST to the fitness studio to purchase the required technology. Energy is still relatively cheap and the cost benefit isn't quite there yet. You have seen the soccer ball light? There are shoes that can be used to plug in your cell phone as they create energy as you walk. www.gizmag.com/in-shoe-energy-harvester/19623/ So the future is bright for creative ideas, there just needs unfortunately to be a cost benefit associated.
I asked an energy expert to weigh in. Here is his response.
Some do - see for example www.thegreenmicrogym.com/electricity-generating-equipment/
But, the main problems are scale and cost. Mostly, humans just can’t make all that much power on the scale of our use, and electricity is cheap. 100 W is reasonable for moderate exercise (see onlinelibrary.wiley.com/doi/10.1002/clc.4960130809/pdf)
- cycling is generally in that range. But let’s say an execbike is in use for 8 hours a day at that level (probably a high estimate, but for example) - that is 8 hr * 100 W = 0.8 kWh. That’s about 8-10 cents worth of electricity from eight hours of cycling. So even over a year, we’re talking about a couple bucks of electricity per bike. So no matter how cheap the electronics to make the feedback work so you can put it into the building or the grid, it is hard to imagine that costing out. You could (and I believe some bikes do), however, use the energy to run the bike interface system and TV, which is more possible because you can then avoid some other power electronics (and maybe not plug it in at all). But again, we’re not talking about much real avoided energy. When people ask me about this, I tell them there are many, many better ways to spend money and effort than trying to capture human excercise. This is unfortunate - because it does have great appeal!
This reminds me of one interesting way to try to have intuition for this fundamental fact - that humans don’t produce very much energy on the scale of our use - is to translate energy use into the equivalent of people on bikes. A typical household uses 11,000 kWh per year, or 30 kWh per day. This is the equivalent (based on the conversion above) of about 38 people riding exerbikes in 8 hour shifts every day at 100 W (not easy or fun!) to power every home! That helps with the intuition - imagine your home (this doesn’t include your car, your job, any of that) being powered instead of by the grid, by a large group of excercycles, and you realize how much value we get from cheap, cheap electricity - that day’s worth of electricity costs $3-4, not the thousands you would have to pay people to ride all day. Plus, this doesn’t include the food those poor cyclists would have to eat, and the energy to produce that.
Another thing to be careful of is the declaration the biomechanical processes are efficient. They actually aren’t that efficiency from an energy conversion perspective. Photosynthesis overall is generally calculated to capture only about 0.5% of light energy, and every time an organism metabolizes something up to 90% is generally estimated to be ‘wasted’. So if you compare growing a crop to run a power plant vs. growing a crop to feed us to make power, the power plant will win every time. That is of course not a reason not to exercise - just a reason that “people power” will probably never power the world directly! Of course, we can put “people power” into creating smarter energy systems that avoid most of the problems created by energy use.
josh sneideman
Thank you very much. I can say without doubt this is one of the highest quality responses I've ever received about something scientific.
It's too bad it wouldn't work, or at least not very well. Still, I wonder if human power could ever be put to (ethical) use in other areas of society where combustion or electrical machines now predominate.
Dear ted ed ,
Can you do why we have different beliefes ? I would appreciate It ;)
That's a great idea, Jackie Da Girl Gamer! Do you know anybody who can help us explore that topic? If so, tell us about them here: ed.ted.com/nominate_an_educator
Also, you might like this lesson about the five major world religions: ed.ted.com/lessons/the-five-major-world-religions-john-bellaimey Let us know what you think!
TED-Ed
Yes, TED. And perhaps a dab of philisophy once in a while. ;)
MarcianusImperator Great idea!! What do you have in mind? Tell us here: ed.ted.com/nominate_an_educator
I really think that is a horrible request for a Ted-Ed video. This series should be rooted in fact, not fiction. Belief is taught and learned, not something we are born with and religion (because, and let's be honest here, that is what you are asking to have explained) has no place being involved with science or facts. Religion is based in belief and only belief. You believe what you do because that is what you were exposed to while you were growing up. You get the major set of formative beliefs from your parents and during your educational years. Mom and Dad teach you right from wrong, what religion to follow, and all of the societal expectations (like laws) to follow when you go out in the world and you pick up the rest as you have experiences during your life. If you speed while driving, for example, the police will pull you over and punish you for breaking a law (and yes, a law is an agreed upon belief).
Philosophy, on the other hand, is an examination of rationale and logic to try and explain those beliefs. You need to ask why the different philosophies exist, not about beliefs. Going back to the speeding example, why do the police care? Because we all agreed that it is safer to travel at a certain speed when we are driving. If we suddenly stopped enforcing laws, it wouldn't cause the world to end...it would just be a lot more dangerous to drive around because most people won't be safe in their cars. That's the rationale behind speeding laws. It's a belief, but its one that can be explained through logic and reason. Religion has no basis in rationale and logic and therefore no place in philosophy. We use religion to help us understand why things are the way they are and to keep people from panicking because we don't understand the origin of our universe, why we are born, or why we die. It's like Aesop's fables or Grimm fairy tales. Sure, it is entertaining and can teach us morality, but it has no place in an intelligent society.
Hmm, no mention of nuclear power?
It's efficient, clean and perhaps the best source of energy available to us (Solar and Wind are great, but with the current technology, they can't match the production output of Fossil Fuels).
The insanity of thinking--or worse--claiming nuclear energy is in ANY WAY WHATSOEVER "clean" is similar to saying rape is an act of kindness.
You can hardly be more ironically wrong.
What do you suppose we do with the nuclear waste? How might we store it? Where might we store it? How long is the waste radioactive? What happens when such radioactive waste contaminates an environment as it inevitably will do so? How do you safe guard nuclear reactors against, oh, say meltdown? How do you prevent oh, say, a tsunami from hitting a reactor? An earthquake? A "whatever disaster that will continue the line of thousands of years of engineering disasters that teach us what we still don't know" event?
The fact is, as long as nuclear reactors exist and are operating THERE WILL BE accidents. This is 100% certainty. Without a doubt. Predictable. And proven true.
We have not somehow magically reached the point of science, engineering and technology development where we have rendered accidents extinct.
Approximately one level 7 INES (major accident on the International Nuclear Event Scale--Chernolyb, Fukushima) every quarter century along with however many smaller accidents.
Can you please explain to me how this is clean?
Also, how are reactors made? Do you need to mine material from the earth? Is mining a clean process? What powers the mining operation? Is that clean? Did you know the production of cement accounts for something like 8% of global greenhouse gases emissions and is highly energy intensive. Cement is used in concrete and concrete is used to building many things, including nuclear reactors. Is that clean? What powers the plants that make cement? Is that clean? What powers the building of nuclear power plants? What powers all the transportation involved in building a plant?
And this energy analysis can go on and on when you ACTUALLY do the energy accounting up and down the entire chain of reality involved in building and operating a nuclear power plant. This analysis can apply to other so-called "clean" energies or "alternative" energies or "sustainable" energies too.
However, yes, it is energy dense, yes it is reliable (except when it is devastating a continent or ocean) but the propaganda put out that it is somehow "clean" is absolutely indefensible, based on a unjustified belief and dishonest.
@@fierce-green-fire8887 woah woah calm down lol he or she probably didnt read into the topic enough
@@fierce-green-fire8887 guess they never heard of the fukishima incident..hmmmm clean, lol clean an island off the map..
Interesting and fun animation!
Sound is vibration???
josh sneideman Could probably chime in here! He's one of the educator's that helped work on this lesson.
TED-Ed Correct Daniel Shooshtari. Sound is a mechanical wave and can only travel through the vibration of a medium. That is why sound does not travel in space, there is nothing to vibrate. Interesting fact sound travel faster in water than in air. Why?
well, I think it must have something to do with the molecules. The molecules in water are closer together, thus it's easier for the molecules to excite adjacent molecules. sound is even faster in iron and that is why you always hear the train through the rails before you hear it through air when you're waiting for the train:)
it's to do with the compression of particles in the air. Our ears pick up these compressed particles as sound. No air particles in space to be compressed - therefore no sound
POV...You got sent here from school/online school and you don't want to watch it.
How did the energy that makes up the universe get here in the first place?
Do u have a movie on Toxicology?
nice work!!
Problems solved, we just have to build. it's that simple.
0:55 isn't sound a vibration :/
Yes, and vibrations are waves and waves are energy.
So is it possible to use the rotation of the Earth as a source of energy?
in a way, aren't winds and hydroelectric energy a consequence of that ?
@@dragos8839 THANK YOU
I designed the Hydrolyspheres which take in ocean water pressure. That pressure is first converted from potential energy into kinetic energy with generators. Those generators produce electrons which then go to splitting the water itself into hydrogen and oxygen. The hydrogen is then burned in generators to produce electricity and water. There you have it a way to produce endless amounts of clean green energy using the oceans. I did it all by myself with no college only a lap-top the internet and determination. I need help building a proof of concept prototype. Anyone?
Bueller?.. Bueller?....
How big are we talking?
There is a whole nother side to the equation. Cold energy. This is where the breakthroughs have continually happened and are continually being stamped out by the status quo. Plasma, cold electricity, lightning, brown's gas torches all available, but not allowed. SHALOM!
Great animated infotainment. But given the hugely increasing energy demand I miss today's biggest source of reliable and scalable clean energy. #Nuclear energy is a major source of clean power globally. Far ahead of solar and wind. It's energy density is unbeatable compared to coal and even more against diffuse renewables.
The insanity of thinking--or worse--claiming nuclear energy is in ANY WAY WHATSOEVER "clean" is similar to saying rape is an act of kindness.
You can hardly be more ironically wrong.
What do you suppose we do with the nuclear waste? How might we store it? Where might we store it? How long is the waste radioactive? What happens when such radioactive waste contaminates an environment as it inevitably will do so? How do you safe guard nuclear reactors against, oh, say meltdown? How do you prevent oh, say, a tsunami from hitting a reactor? An earthquake? A "whatever disaster that will continue the line of thousands of years of engineering disasters that teach us what we still don't know" event?
The fact is, as long as nuclear reactors exist and are operating THERE WILL BE accidents. This is 100% certainty. Without a doubt. Predictable. And proven true.
We have not somehow magically reached the point of science, engineering and technology development where we have rendered accidents extinct.
Approximately one level 7 INES (major accident on the International Nuclear Event Scale--Chernolyb, Fukushima) every quarter century along with however many smaller accidents.
Can you please explain to me how this is clean?
Also, how are reactors made? Do you need to mine material from the earth? Is mining a clean process? What powers the mining operation? Is that clean? Did you know the production of cement accounts for something like 8% of global greenhouse gases emissions and is highly energy intensive. Cement is used in concrete and concrete is used to building many things, including nuclear reactors. Is that clean? What powers the plants that make cement? Is that clean? What powers the building of nuclear power plants? What powers all the transportation involved in building a plant?
And this energy analysis can go on and on when you ACTUALLY do the energy accounting up and down the entire chain of reality involved in building and operating a nuclear power plant. This analysis can apply to other so-called "clean" energies or "alternative" energies or "sustainable" energies too.
However, yes, it is energy dense, yes it is reliable (except when it is devastating a continent or ocean) but the propaganda put out that it is somehow "clean" is absolutely indefensible, based on a unjustified belief and dishonest.
+Urs Bolt the problem with nuclear power is that the nuclear companies demand enormous money for generating power, making it very costly
Is the energy stored or rather absorbed by the atmosphere of earth ultimately released to universe
@@fierce-green-fire8887 GIRL NOT THE ESSAY NO ONE IS READING THAT.
@@fierce-green-fire8887 YOU'RE RIGHT THO
3:12
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Muito bom!
what about tidal?
what about the geosphere?
Were is nuclear enegry ? It is clean and efficient
In 2:10 i know why it is best to be a vegetarian
Mark Pataki its the energy that makes up the universe, now this may end up becoming a scientific breakthrough but I'm pretty sure the earth is a part of the universe. So the energy of the universe should be in the earth.
i have no idea what's happening but thank you for my science information task answers 💀🤪
Lol those lower on the food chain are more efficient than those higher ups
My science teacher sent me this who else??^-^
Yea
Good make this video very nice
Good
Three years agoGreat
Cream
@@paradoxwastaken wut
Interesting
The arrow in the bottom right between Decomposers and Producers should not be there (2:10 - 2:35). Decomposers DO NOT provide energy to Producers. +josh sneideman
Yes, however, this video is about energy and specifically in the diagram that I am referencing the narration is about the average percentage of energy that is passed to the next trophic level. I maintain that the arrow pointing towards the producers should be removed as producers get their energy from the sun.
Hate to tell you this, but you are WRONG. Without the materials that decomposers cycle into the soil and atmosphere, plants could not perform the processes during photosynthesis that help them produce their own energy and sugars. Potassium, magnesium, and nitrogen are all provided by decomposers breaking down dead/decaying organics, cycled into the soils that plants use, and are directly responsible/involved in the energy creating steps of photosynthesis. In fact, some of the phosphates obtained from the soil as a result of the activity of decomposers is involved in the processing of ADP to ATP as plants perform their own metabolic processes. So, yes...the arrow is where it should be. Let me know and I can provide you the scientific papers and text that show this. I teach this to my Botany and Cell Biology classes every year.
@@Turtle3379 If the arrows are intended to represent ENERGY, they should not be there. The narration at the point that i referenced is all about energy moving through the food chain, not MATTER. If the arrows are supposed to represent MATTER then yes, there should be an arrow from decomposers to the producers. This video is about energy, not matter. Also, your statement "produce their own energy" is factually incorrect. Plants get and store energy from the sun through the production of sugars, they don't MAKE or PRODUCE energy. Additionally, one could argue that the arrow should point from producers to decomposers because of the interchange of sugars and nutrients between soil bacteria and plant roots. The energy goes from the plant roots to the decomposers and non-energy storing materials like nitrogen and phosphorus are passed to the plant roots. I agree that materials are passed back and forth between producers and consumers, but in a video specifically about ENERGY, and that has narration about ENERGY over the section with arrows, I believe that it is misleading to have an arrow implying energy is passed from decomposers to producers.
If only the biosphere was replaced with the osphere (edit: pyrosphere). Then the ancient Greeks would be right. Sort of.
Sprazzmatic, Pyrosphere? I think that’s it..
Magmaspehere? Lavasphere? Fortiasphere?
@@lilliant.82 YES Pyrosphere precisely.
Why not mention wave and tidal power?
Conspiracy!
James O’Loughlin Gravity is another source of energy that is just now being explored.
Yall wanna help me
Define energy?
State the law of conservation of energy
State five forms of energy
State two internal sources of energy?
What is the major external source of energy?
What are the greenhouse gases that cause global warming?
What are the types of fossil fuel energy sources?
Where do fossil fuels come from?
State four types of renewable sources of energy?
What does access to energy impact?
I like ur voice
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