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

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  • Опубликовано: 20 ноя 2024

Комментарии • 272

  • @angel6922
    @angel6922 2 месяца назад +17

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

  • @saritasharma4992
    @saritasharma4992 8 месяцев назад +31

    All the best for your tomorrow exam

  • @angel6922
    @angel6922 2 месяца назад +11

    1:33 sir started teaching

  • @gamingstar2720
    @gamingstar2720 8 месяцев назад +131

    Legends come before exam 😂

  • @ananyasartisticworld9640
    @ananyasartisticworld9640 9 месяцев назад +22

    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.

    • @fusiongaming132
      @fusiongaming132 8 месяцев назад +1

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

    • @veerlunia06
      @veerlunia06 8 месяцев назад +1

      Google 😊 19:39

    • @juniourkitchen1239
      @juniourkitchen1239 8 месяцев назад +2

      Seedha answer
      Light travels faster than sound

    • @anumshaikh5792
      @anumshaikh5792 8 месяцев назад +1

      she said that "the speed of sound in air is 343m\s....."@@fusiongaming132

    • @dramatic_innocence
      @dramatic_innocence 8 месяцев назад +1

      You are wrong the answer is right

  • @nontopupplayerz
    @nontopupplayerz Месяц назад +2

    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.

  • @prateek9468
    @prateek9468 Месяц назад +1

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

  • @alish.chorotiya
    @alish.chorotiya 9 месяцев назад +4

    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

  • @gamerzera-14
    @gamerzera-14 2 месяца назад +3

    13:58-Threshold of pain=130db

  • @angel6922
    @angel6922 2 месяца назад +4

    14: 44 your voice is like mic mouse 🐭

  • @sangeetadeshmukh7958
    @sangeetadeshmukh7958 28 дней назад +1

    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.

  • @itzanchal7068
    @itzanchal7068 3 месяца назад +2

    19:05 because speed of light is faster than sound

  • @AtomicStudent
    @AtomicStudent 8 месяцев назад +2

    Homework question ❓
    Cause light travels Faster than sound

  • @shivanipandey4206
    @shivanipandey4206 9 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 19 дней назад

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

  • @shubhiverma4607
    @shubhiverma4607 8 месяцев назад +6

    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 🤩
    SIR I HAVE EXAM ON MONDAY AND WHEN MY RESULTS WILL COME SURELY I WILL TELL SIR 😊 thank you

    • @Sainathyaragal25
      @Sainathyaragal25 2 месяца назад

      Bro r u a human?
      Or created this for an AI?

  • @newexplorewithme
    @newexplorewithme 8 месяцев назад +1

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

  • @thejinkarushi
    @thejinkarushi 8 месяцев назад +3

    sir mejhe app ki wajha se paad aa gaya

  • @N.c_editz27
    @N.c_editz27 8 месяцев назад +1

    It's because of time traveling of sound wave😊

  • @HarshRathore-qo7zn
    @HarshRathore-qo7zn 8 месяцев назад +8

    Like karo agar tum exam se pehle aaye ho

  • @KamalShakya-d7v
    @KamalShakya-d7v Месяц назад +1

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

  • @RouhanKhan-rf7cp
    @RouhanKhan-rf7cp 9 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

  • @VaishnaviMora-t5b
    @VaishnaviMora-t5b 2 месяца назад

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

  • @rajwatidevi2871
    @rajwatidevi2871 3 месяца 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 .❤❤

  • @Priyanshiallrounder
    @Priyanshiallrounder 9 месяцев назад +2

    Because lightning have frequency than thunder strom etc

  • @TaheraBanu-l5m
    @TaheraBanu-l5m 7 дней 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 ❤❤❤

  • @ishanvloger
    @ishanvloger Месяц назад +1

    Legend watch this video 15 hrs before exam .

  • @RekhaBandaru-ee2mx
    @RekhaBandaru-ee2mx 3 месяца назад +1

    Lightining takes place first because the light travells faster thand sound

  • @samridhigodiyal9720
    @samridhigodiyal9720 9 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.

  • @SohamTahakik
    @SohamTahakik Месяц назад

    19:04 light travels fast than sound

  • @NotPro_Bee007
    @NotPro_Bee007 9 месяцев назад

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

  • @SaiSaketh-hl2fi
    @SaiSaketh-hl2fi 8 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.

  • @ArnavS781
    @ArnavS781 12 дней назад

    14:51 That was unexpected!!🤣

  • @angel6922
    @angel6922 2 месяца назад +2

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

    • @RoyPubgMoP
      @RoyPubgMoP 2 месяца назад +1

      Us bro us ❤❤

  • @blacklover33318
    @blacklover33318 9 месяцев назад +1

    Because speed of light is greater than speed of sound

  • @ramgopalsoni9478
    @ramgopalsoni9478 9 месяцев назад +8

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

    • @rnprogamer761
      @rnprogamer761 2 месяца назад

      😢😢😢😢😮😮😮😅😅😅😅😅😅😂😂😂😂😂😂😊

  • @surbhikumari6550
    @surbhikumari6550 2 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

  • @KuldeepSahu-m4x
    @KuldeepSahu-m4x 20 дней назад +1

    05:11 😂

  • @miheertembhare5865
    @miheertembhare5865 Месяц 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.

  • @manishkr4627
    @manishkr4627 Месяц назад

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

  • @Shorttakestories
    @Shorttakestories 8 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

  • @Falaahari
    @Falaahari 11 дней назад

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

  • @maltinegi4315
    @maltinegi4315 9 месяцев назад +2

    Thank u sir for this wonderful session .

  • @sunitatiwari4907
    @sunitatiwari4907 2 дня назад

    Because speed of light is more than speed of sound and lightning ⚡ occur in air and sound is lesser in air and more in solids

  • @jyothi-officevk9350
    @jyothi-officevk9350 2 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.

  • @itzananya301
    @itzananya301 8 месяцев назад

    19:56

  • @mahesm1979
    @mahesm1979 Месяц назад +1

    14:44 🤣🤣😂

  • @Sidgamer005
    @Sidgamer005 Месяц назад

    Speed of light which is 3×10⁸ m/s, is more than speed of sound which is (nearly) 340 m/s. That's why lightning is seen first.

  • @educationaltechnology11811
    @educationaltechnology11811 8 месяцев назад

    The speed of light is 300000km/s and the speed of sound is 330m/s . Light travels faster than sound.....Hence lighting is seen earlier and sound that's the thunder is heard later

  • @DilanyaThinesh
    @DilanyaThinesh 19 дней назад

    Speed of light is more than sound and light passes through the cloud easily compared to sound

  • @ManoharARao-wd7cu
    @ManoharARao-wd7cu 9 месяцев назад

    Homework:-
    The speed of light is fast....so lightning comes way before the thunder.
    The sound propagating through medium air is much slower ...so it will come way after the lightning

  • @divyabharti3629
    @divyabharti3629 8 месяцев назад +2

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

  • @thealphagirl5571
    @thealphagirl5571 8 месяцев назад +1

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

  • @Priyanka_hudda
    @Priyanka_hudda 8 месяцев назад

    1:12

  • @ramabansal7541
    @ramabansal7541 5 месяцев назад

    The speed of sound (344 ms) is far less than the speed of light 3×108 ms in air.
    Thus sound of thunder will take more time to reach the observer compared to light.
    Hence, a flash of light is seen before we hear thunder.
    Therefore, lightning is seen earlier and thunder is heard later.
    Answer of home work question

    • @ramabansal7541
      @ramabansal7541 5 месяцев назад

      Like like karo Agar answer helpful ho to

  • @shaziyasiddique5356
    @shaziyasiddique5356 8 месяцев назад

    tak tak tak aha 5:10

  • @NirmalabenPatel-ts7sp
    @NirmalabenPatel-ts7sp Месяц назад +1

    Yes

  • @KunalSharma-hc2px
    @KunalSharma-hc2px 8 месяцев назад

    Ans :- 1 upon F so, frequency is 100 therefore 1 upon 100 equal to 0.1s

  • @sanskritigupta1197
    @sanskritigupta1197 8 месяцев назад

    Lighting and thunder take place in the sky at the same time and at same distance from us. Lighting is seen earlier and thunder is herad later as speed of light is more than sound.

  • @QueenLadybugCovers
    @QueenLadybugCovers 9 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. :)

  • @ANIME.424
    @ANIME.424 8 месяцев назад

    Sound effects were wonderful sir.

  • @gayatriminakshi3117
    @gayatriminakshi3117 2 месяца назад

    Hw
    Question
    Lightning is heard before the thunder. As light travels faster than sound.

  • @fellowshipccrt2209
    @fellowshipccrt2209 2 месяца назад

    The seed of light is faster than the speed of sound hence we see lighting first .

  • @anushmitadass
    @anushmitadass 8 месяцев назад

    speed of light is greater than the speed of sound that is why during thunderstorm lighting is seen earlier and thunder is heard later

  • @anantagarwal0918
    @anantagarwal0918 27 дней назад

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

  • @TheProArtist531
    @TheProArtist531 8 месяцев назад

    Ans:- because sound travels slower than light

  • @SarojaBanigol
    @SarojaBanigol 9 месяцев назад +4

    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

  • @sumanmeena7778
    @sumanmeena7778 9 месяцев назад

    Ans. The speed of light is greater than speed of sound.

  • @mychannel_62
    @mychannel_62 9 месяцев назад

    We hear lightning first because the speed of light is more than the speed of sound hence, thunder is heard later.

  • @magicalfun8882
    @magicalfun8882 2 месяца назад

    Light travels faster than sound 😊

  • @mamtachaudhary9080
    @mamtachaudhary9080 8 месяцев назад

    The lightning and thunder are seen when there is a heavy rain and lightning is seen before than thunder because you generally seen that if lightning 🌩️⚡ falls on somebody or something it will burn it and it is because of the high speed of lightning so lightning is seen earlier because speed of lightning is very much higher than the speed of thunder, thunder speed is 330m/s and which is very less because speed of lightning is seen and calculated as 3 × 10 to the power 8 hence, lightning is seen earlier than thunder

  • @zishofficial2982
    @zishofficial2982 Месяц назад

    Speed of light 3into m/s
    Speed of sound 340 m/s
    Speed of light is greater than speed of sound

  • @UiUi-b4n
    @UiUi-b4n 6 месяцев назад +3

    phonk lover attendennce here

  • @Nitish18
    @Nitish18 2 месяца назад

    This session was helpful

  • @rajlaxmis2968
    @rajlaxmis2968 9 месяцев назад

    Because light is fastest in whole universe and that why we see lighting earlier then thunder ⛈️

  • @artsbyseher5213
    @artsbyseher5213 9 месяцев назад +8

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

  • @sahib533
    @sahib533 2 месяца назад

    Homework answer sa we see to the lightning first and thunder after because the speed of light is more than the speed of sound in air sahi speed of sound =3×100000000 metre per second and speed of sound = 150 metre per second hence prooved😁

  • @praneel_sings
    @praneel_sings 2 месяца назад

    Lightning is seen eariler than we hear the sound of thunder because speed of light (300,000,000 m/s) is more than the speed of sound (330 m/s)

  • @Isha_prajapati
    @Isha_prajapati 8 месяцев назад

    answer: because the speed of light is more than that of sound

  • @krishnafrag4052
    @krishnafrag4052 9 дней назад

    14:45 bro be came mario😅

  • @LE_DRAGO
    @LE_DRAGO 9 месяцев назад

    Because light is speeder than sound so lightning is seen earlier and it is sound later

  • @MH_Gaming-k1m
    @MH_Gaming-k1m 2 месяца назад

    brother my exam is at 9:00 am and the time is 8:00am

  • @Darkgaming_1234_aay
    @Darkgaming_1234_aay 8 месяцев назад

    Because light can travel faster than sound and another reason is sound is travel slow in air

  • @AkanshaBains-b6f
    @AkanshaBains-b6f 9 месяцев назад

    Home work questions
    Because speed of light is more than speed of sound

  • @musicdevil8262
    @musicdevil8262 8 месяцев назад

    Funny line 5:10😂😂😂

  • @Godlakshya7777
    @Godlakshya7777 Месяц назад +2

    Yooooooo❤

  • @GSkitty
    @GSkitty 7 месяцев назад

    Got 97 percentage in the exam because of you 🥰

  • @Anushkawalia-v3d
    @Anushkawalia-v3d Месяц назад +1

    Have to watch it as a 9th grader dueeeee toooo olympiadsss 😂😅

  • @RealPolluxCraft
    @RealPolluxCraft 8 месяцев назад

    Because light is faster than the sound so first we can see the light and then hear the thunder

  • @archanagautam9836
    @archanagautam9836 8 месяцев назад

    Speed of light is more faster than sound that's why wee see lightning first and listen song later

  • @shwetharaghavendra4097
    @shwetharaghavendra4097 Месяц назад

    thank u sir

  • @Thejas_Plays
    @Thejas_Plays 8 месяцев назад

    Sir the homework answer is speed of light is much faster than the speed of sound by which we hear thunder later

  • @miheertembhare5865
    @miheertembhare5865 Месяц назад

    Ans = The sound has less speed than light

  • @sharmilasharmila3482
    @sharmilasharmila3482 8 месяцев назад +1

    Answer: because the speed of sound in air is 340m/s and speed of light is 3*10⁸m/s. That's why thunder is heard after the flash of light 🙏

  • @rrxatejasprogamer-yyyt
    @rrxatejasprogamer-yyyt 18 дней назад

    Because light is fast and thunder is slow

  • @devallfactz2965
    @devallfactz2965 8 месяцев назад

    In short I think the light travel more faster than sound and that's the reason.....

  • @rashimanjunath3015
    @rashimanjunath3015 8 месяцев назад

    Because light travels faster than the sound

  • @aviralsbhaktidham9230
    @aviralsbhaktidham9230 9 месяцев назад

    SPEED OF SOUND IN AIR IS 346 M PER SEC
    THATS WHY WE CAN HEAR SOUND LATE

  • @prempatel103
    @prempatel103 2 месяца назад +2

    Legends watching few hours before exam ☠️💀💀

  • @juniourkitchen1239
    @juniourkitchen1239 8 месяцев назад

    As light travels faster than sound

  • @DeepaB114
    @DeepaB114 2 месяца назад

    18:00 😂😂