Sound | Full Chapter Revision under 30 mins | Class 8 Science

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  • Опубликовано: 19 янв 2025

Комментарии • 396

  • @saritasharma4992
    @saritasharma4992 10 месяцев назад +85

    All the best for your tomorrow exam

  • @angel6922
    @angel6922 4 месяца назад +39

    18:44 the speed of light is more than the speed of sound thus, lightning is seen first, which is accompanied by thunder later

  • @gamingstar2720
    @gamingstar2720 10 месяцев назад +222

    Legends come before exam 😂

  • @angel6922
    @angel6922 4 месяца назад +29

    1:33 sir started teaching

    • @crimebranchsuratcity1085
      @crimebranchsuratcity1085 4 месяца назад +1

      😅😅😅😂😂😂right😅

    • @RoyPubgMoP
      @RoyPubgMoP 4 месяца назад +3

      Fr💀

    • @saraswatasadhu5611
      @saraswatasadhu5611 3 месяца назад +2

      Thank God bro fr I ain't wasting 1 minute 33 seconds 💀

    • @KuldeepSahu-m4x
      @KuldeepSahu-m4x 2 месяца назад

      😂😂​@@saraswatasadhu5611

    • @xtreameditz688
      @xtreameditz688 Месяц назад

      People with RUclips premium can directly skip that without these types of comments.

  • @ananyasartisticworld9640
    @ananyasartisticworld9640 11 месяцев назад +25

    Lightning is the spark that can be seen in the sky during rains and thunder is the loud sound heard just after lightning.though they occur at the same time lightning is seen before thunder is heard ,this is because the speed of light is much more than the speed of sound.The speed of light in air or vaccum is approximately 3*10⁸m/s and the speed of sound in air is 343m/s.Thus,the light from lightning travels to us much faster than the sound produced by it.

    • @fusiongaming3020
      @fusiongaming3020 10 месяцев назад +1

      actually sound cannot travel in vacuum so you can correct you comment

    • @veerlunia06
      @veerlunia06 10 месяцев назад +1

      Google 😊 19:39

    • @juniourkitchen1239
      @juniourkitchen1239 10 месяцев назад +2

      Seedha answer
      Light travels faster than sound

    • @anumshaikh5792
      @anumshaikh5792 10 месяцев назад +1

      she said that "the speed of sound in air is 343m\s....."@@fusiongaming3020

    • @dramatic_innocence
      @dramatic_innocence 10 месяцев назад +1

      You are wrong the answer is right

  • @shubhiverma4607
    @shubhiverma4607 10 месяцев назад +12

    Our teacher gave us an example of noise :
    (Students understood 😅)
    Sir she said the class the students perfect example of N-O-I-S-E .
    Then I understood okkk that's why whe always remember the name of all the naughty students first 🥇
    She says (❤when you all will go to ninth you will forget us but I've seen whenever old students come to meet there teachers very old teachers mostly remember naughty students 😊❤) but teacher even sir they all love us equally 🤩 basically I got 75/80
    SIR I HAVE EXAM ON MONDAY AND WHEN MY RESULTS WILL COME SURELY I WILL TELL SIR 😊 thank you

  • @nontopupplayerz
    @nontopupplayerz 3 месяца назад +6

    Sir and their team should be appreciated as they are providing free and simple knowledge to everyone. I had applied for [NSO] and these videos are helping me a lot two clearing my concepts.

  • @alish.chorotiya
    @alish.chorotiya 11 месяцев назад +5

    The speed of light is more than sound due to more speed of light it reaches us before sound therefore lightning is seen earlier and sound is heard later

  • @sangeetadeshmukh7958
    @sangeetadeshmukh7958 2 месяца назад +4

    Homework Answer:- The Speed of the sound is much smaller than the speed of the light.
    Thus we see thunder first and then listen to the voice of it.

  • @kumaraswamytr4895
    @kumaraswamytr4895 3 месяца назад +5

    Bro said under 30 min but finished under 20 min

    • @manjukaintura3952
      @manjukaintura3952 28 дней назад +1

      Yeah!!!!!!!! Chalo... I'm not the only one who noticed it😂😂

  • @angel6922
    @angel6922 4 месяца назад +6

    14: 44 your voice is like mic mouse 🐭

  • @Memer_boy_s
    @Memer_boy_s 4 дня назад +1

    The speed of light is more than thunder ,therefore the light is seen first and thunder heard later.

  • @ArnavS781
    @ArnavS781 2 месяца назад +2

    14:51 That was unexpected!!🤣

  • @gamerzera-14
    @gamerzera-14 4 месяца назад +4

    13:58-Threshold of pain=130db

  • @Aestheticbts77
    @Aestheticbts77 Месяц назад +3

    Lightning is seen earlier because light travels faster than sound. The speed of the light is appox. 3x10 whole to the power 8 m/sec whereas speed of sound is 340m/s. As a result the sound of thunder takes more time to reach our ears and lightning could be seen earlier.

  • @Bhaavika-CallmeBhaa
    @Bhaavika-CallmeBhaa 10 дней назад +2

    14:54 😂😂😂😂😂
    Best part 😅😅😅

  • @divyabharti3629
    @divyabharti3629 10 месяцев назад +3

    Like please 😅 if you don't like then anty ka beta bunty

  • @prempatel103
    @prempatel103 4 месяца назад +4

    Legends watching few hours before exam ☠️💀💀

  • @navyaa.c4857
    @navyaa.c4857 Месяц назад +2

    light travels faster than sound 18:44

  • @Aryan2_01-o1p
    @Aryan2_01-o1p Месяц назад +1

    5:15 because air is available in solid liquid and gas

  • @thejinkarushi
    @thejinkarushi 10 месяцев назад +3

    sir mejhe app ki wajha se paad aa gaya

  • @bhavanaoza1922
    @bhavanaoza1922 Месяц назад +2

    Homework question answer:
    Bcz our eyes are infront and our ears are a little back r😅😂
    Just kidding real answer is light travels faster than sound..

  • @Pooja_ee
    @Pooja_ee 5 дней назад +2

    Any one in kerala 😅

  • @shivanipandey4206
    @shivanipandey4206 11 месяцев назад +2

    Ans - the light trevels at the speed of 300000km/sec. Which is very large in comparison to the speed of sound which trevels all then 3.30 m/sec. In air
    :that is why lightning is soon at the rate earlier and thunder is heard later 😊😊

    • @ItzzVai4U
      @ItzzVai4U 2 месяца назад

      Sound travels at 330 m/s not 3.30 m/s

  • @N.c_editz27
    @N.c_editz27 10 месяцев назад +1

    It's because of time traveling of sound wave😊

  • @ramgopalsoni9478
    @ramgopalsoni9478 11 месяцев назад +8

    well explained sir please upload a rapid rivision of crop production and manegment class 8 .....

    • @rnprogamer761
      @rnprogamer761 4 месяца назад

      😢😢😢😢😮😮😮😅😅😅😅😅😅😂😂😂😂😂😂😊

  • @fansfollowing7029
    @fansfollowing7029 Месяц назад +1

    Thanks sir for understanding this chapter you are the teacher 🎉

  • @itzanchal7068
    @itzanchal7068 5 месяцев назад +2

    19:05 because speed of light is faster than sound

  • @Thefaujikid9801
    @Thefaujikid9801 11 месяцев назад +8

    Will we having these kind of videos for ch 11 , 12 and 13 class 8?

  • @SubhadraNaik-tb9ys
    @SubhadraNaik-tb9ys 7 дней назад +1

    Ah... I can hear u 5:11

  • @maheswari_magesh
    @maheswari_magesh 3 месяца назад +1

    14:44 🤣🤣😂

  • @newexplorewithme
    @newexplorewithme 10 месяцев назад +1

    HW question:- bcz speed of light is faster than Speed of sounds 👍🏻😊

  • @abtimepasshp0707
    @abtimepasshp0707 9 дней назад +1

    sir is doing pushpa sign at thismoment

  • @angel6922
    @angel6922 4 месяца назад +2

    Legend are watching 1 day before exam and in 2x speed 💀

    • @RoyPubgMoP
      @RoyPubgMoP 4 месяца назад +1

      Us bro us ❤❤

  • @maltinegi4315
    @maltinegi4315 11 месяцев назад +2

    Thank u sir for this wonderful session .

  • @AtomicStudent
    @AtomicStudent 10 месяцев назад +2

    Homework question ❓
    Cause light travels Faster than sound

  • @ishkar-nb3ww
    @ishkar-nb3ww 5 дней назад +1

    Light travels faster than sound lol i typed this without looking

  • @Funny_kashraj6610
    @Funny_kashraj6610 10 дней назад

    it is because the light travels faster than that of the speed of sound thats why lighting is seen first than the sound no matter what the distance is

  • @advita11-t8d
    @advita11-t8d 14 дней назад

    15:27 that's not infrasound or ultrasound, that's infrasonic sound and ultrasonic sound.

  • @Godlakshya7777
    @Godlakshya7777 3 месяца назад +3

    Yooooooo❤

  • @armybackup6175
    @armybackup6175 Месяц назад +1

    Sir we have that sound travel fast in soild

  • @KuldeepSahu-m4x
    @KuldeepSahu-m4x 2 месяца назад +1

    05:11 😂

  • @Priyanshiallrounder
    @Priyanshiallrounder 11 месяцев назад +2

    Because lightning have frequency than thunder strom etc

  • @SarojaBanigol
    @SarojaBanigol 11 месяцев назад +5

    Thank you sir.... in class I didn't understand this chapter that's why I'm seeing this video Thanku so much sir❤😊sirr aap live lelloo

  • @RealItzYash
    @RealItzYash 15 дней назад

    Goated teacher the only one i found who teaches in english and does it better than many others in less time

  • @VaishnaviMora-t5b
    @VaishnaviMora-t5b 4 месяца назад

    19:01 It's simple
    The speed of light is fast as the speed of sound

  • @RouhanKhan-rf7cp
    @RouhanKhan-rf7cp 11 месяцев назад +1

    Lightning is see to be earlier during the thunderstroms this is because the lightning travels with more speed than sound produced in a thunderstorm

  • @DakshaThanu-p1s
    @DakshaThanu-p1s Месяц назад +1

    Who is here one day before the exam

  • @SiyaanSharmaxxx
    @SiyaanSharmaxxx 3 месяца назад +1

    5:10 sar uspe ya kispe hu hu bio wali mam ke saath experience

  • @samridhigodiyal9720
    @samridhigodiyal9720 11 месяцев назад +1

    Lightning and thunder takes place in the sky at the same time and at the same distance from us but light travels faster than sound.

  • @KamalShakya-d7v
    @KamalShakya-d7v 3 месяца назад +1

    Thanks sir
    Tomorrow is my exam 😝😝
    This video helped me to quickly revise

  • @ishanvloger
    @ishanvloger 3 месяца назад +1

    Legend watch this video 15 hrs before exam .

  • @SohamTahakik
    @SohamTahakik 3 месяца назад

    19:04 light travels fast than sound

  • @NamboYT888
    @NamboYT888 Месяц назад +1

    You Were BY RIP INDRA

  • @TaheraBanu-l5m
    @TaheraBanu-l5m 2 месяца назад

    H.w questions
    This is because the speed of sound is lesser than than the speed of light so as the speed of light is more it travels faster then the sound is light is seen earlier and sound of thunder is heard later
    Thankyou for such a wonderful class and for your precious time where you shared us some knowledge ❤❤❤

  • @NotPro_Bee007
    @NotPro_Bee007 11 месяцев назад

    18:41 Because speed of light is faster than speed of sound 👍

  • @QueenLadybugCovers
    @QueenLadybugCovers 11 месяцев назад +2

    Lightning and thunder take place in the sky at the same time and at the same distance from us but Light travels faster than sound.
    thank you, sir, now I understand this chapter better than before. :)

  • @UiUi-b4n
    @UiUi-b4n 8 месяцев назад +4

    phonk lover attendennce here

  • @gajendrakumar8972
    @gajendrakumar8972 10 месяцев назад +1

    Thanku sir but aap jo english bolta ho na mujha toh samaj aa gayi but sir jin bacho ka liya aap ya video dalta ho na vo toh english samaj hi nii pata hoga
    Sir

  • @prateek9468
    @prateek9468 3 месяца назад +1

    18:56 It is because the speed of light is faster than that of sound 😊

  • @rajwatidevi2871
    @rajwatidevi2871 5 месяцев назад

    😊because light travels faster than the sound travels that is why we first see lightening and then after some second we hear thunder in the sky during rain .❤❤

  • @gauthamsubhash354
    @gauthamsubhash354 10 месяцев назад

    Thankyou sirrr😊❤

  • @Debanjaliscreation
    @Debanjaliscreation 13 дней назад

    Because the speed of light is more than the speed of sond 😊❤

  • @SaiSaketh-hl2fi
    @SaiSaketh-hl2fi 10 месяцев назад

    Lightning and thunder occur at the same time and distance from us. However, lightning is seen before thunder is heard because light travels faster than sound. Light travels at a speed of about 300,000,000 meters per second, while sound travels at 340 meters per second.

  • @pardeepparashar5986
    @pardeepparashar5986 Месяц назад

    Homework question: The speed of light is more than the speed of sound that is why we were able to here the lighting first and the thunder later.

  • @faraakbar1248
    @faraakbar1248 Месяц назад

    the 3 set of bones are hammer,anvil and stirrup

  • @vlogswithlabrador1749
    @vlogswithlabrador1749 Месяц назад

    3:00 best timing

  • @Aditya-f7b5u
    @Aditya-f7b5u 4 месяца назад +1

    Because the speed of lightning is faster then the speed of sound

  • @RekhaSaroj-zx3xt
    @RekhaSaroj-zx3xt Месяц назад +1

    Sir book 📚mat dekho😊😊

  • @krishnafrag4052
    @krishnafrag4052 2 месяца назад

    14:45 bro be came mario😅

  • @Kaverikatua
    @Kaverikatua 13 дней назад

    Lighting and thundering take place in the sky at the same time and at the same distance from us. Lighting is seen earlier and thunder is heard later because speed of light is greater than the speed of sound and therefore, light travels faster than thunder.

  • @jyothi-officevk9350
    @jyothi-officevk9350 4 месяца назад

    The reason for the delay in hearing the thunder, is due to the difference in the speed of light and sound. Light propagates millions times faster than sound.

  • @EuroKidsbehror
    @EuroKidsbehror 18 дней назад

    Distract mat karo bhai , kya attendence here kya , kuchh bhi bol raha hai kya paa liya attract kar ke mein bhi phonk lover huun but is tarah distraction create karna sahi nahi hai

  • @musicdevil8262
    @musicdevil8262 10 месяцев назад

    Funny line 5:10😂😂😂

  • @abtimepasshp0707
    @abtimepasshp0707 9 дней назад

    6:55

  • @BANDISHARADA-k1h
    @BANDISHARADA-k1h 15 дней назад

    Sir what is pich

  • @Shorttakestories
    @Shorttakestories 10 месяцев назад

    lighting is seen earlier because speed of light is 3*10^8 m/s whereas the speed of sound is 340 m/s .Therefore we see thunder initially and hear sound later

  • @shrinivasaynule7848
    @shrinivasaynule7848 Месяц назад

    bcoz lighting has light energy, and thundering has sound energy, and as we all know light travels faster than sound....this is why lighting is seen earlier and thundering is heard later...

  • @surbhikumari6550
    @surbhikumari6550 4 месяца назад

    Speed of light (3*10^8 m/s) is much faster than the speed of sound (343m/s) is why we see the lightning before the thunder

  • @VDAstars2010
    @VDAstars2010 Месяц назад

    Light speed is faster than speed of sound, thus we see lighting first and hear sound later

  • @manjulatamore5825
    @manjulatamore5825 Месяц назад

    Very nice explanation

  • @Aditya-kp6bp
    @Aditya-kp6bp 16 дней назад

    Speed of light is faster
    i.e. 400000000 for light,340 for
    sound 18:44

  • @Anesthetic_life_art442
    @Anesthetic_life_art442 11 месяцев назад +1

    Because speed of light is greater than speed of sound

  • @manishkr4627
    @manishkr4627 3 месяца назад

    Thank you sir
    There was little confusion occuring in mind but noew it is clear....very thanks

  • @ANIME.424
    @ANIME.424 10 месяцев назад

    Sound effects were wonderful sir.

  • @KartikBaggan-f9c
    @KartikBaggan-f9c Месяц назад

    It is important to watch this RUclips video for animals one night before the exam. As if tomorrow is my exam, I am watching today...

  • @journallifie0977
    @journallifie0977 Месяц назад

    14:44 HALLOOOWW 😂

  • @HarshRathore-qo7zn
    @HarshRathore-qo7zn 10 месяцев назад +9

    Like karo agar tum exam se pehle aaye ho

  • @sudhamshsslokas8895
    @sudhamshsslokas8895 15 дней назад

    19:34 subscribe

  • @educationaltechnology11811
    @educationaltechnology11811 10 месяцев назад

    Sir iam cbse our exams are coming on April 1 can you conduct any tests, quiz , or mind maps? Because I saw your video in light and also in many lessons too but that light lesson had good mind maps.

  • @thealphagirl5571
    @thealphagirl5571 10 месяцев назад +1

    the speed of lightning is faster than that of thunder as light travels faster than sound.

  • @miheertembhare5865
    @miheertembhare5865 3 месяца назад

    During a thunderstorm, lightning is seen first and thunder is heard later on because light travels faster than sound. Lightning always comes with thunder. If you see a lightning flash but cannot hear anythunder, the thunderstorm is most likely be quite far away from you.

  • @sumersinghbhati4668
    @sumersinghbhati4668 19 дней назад +1

    Those people who love their parents like❤❤

  • @anantagarwal0918
    @anantagarwal0918 2 месяца назад

    Because the speed of light is more than sound. Therefore, we see the lighting earlier and hear the sound later on 🤔

  • @Falaahari
    @Falaahari 2 месяца назад

    answer= We har sound after the thunder bcoz light travels faster than sound

  • @geetamreddy486
    @geetamreddy486 27 дней назад

    Ans:- the speed of light is faster than the speed of sound. That's why we can hear thunder after lightning strikes.

  • @Sunwukong-l4f
    @Sunwukong-l4f 28 дней назад

    Legends don’t flex about how they are stupid enough to only study one day before exam

  • @Ashish-y1r9q
    @Ashish-y1r9q 10 месяцев назад

    can I please have the link of one short......

  • @RishikeshBiswas
    @RishikeshBiswas 10 дней назад

    the upper point is called crest

  • @PQR-1234
    @PQR-1234 11 месяцев назад +2

    Thankyou sir for a bringing such a great, amazing and useful session for us.......❤❤💛💛💖💖