Seismic waves | Earth geological and climatic history | Cosmology & Astronomy | Khan Academy
About | Information | History | Online | Facts | Discovery
S-waves and P-waves. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/cosmology-and-astronomy/earth-history-topic/seismic-waves-tutorial/v/why-s-waves-only-travel-in-solids?utm_source=YT&utm_medium=Desc&utm_campaign=cosmologystronomy Missed the previous lesson? https://www.khanacademy.org/science/cosmology-and-astronomy/earth-history-topic/plate-techtonics/v/how-we-know-about-the-earth-s-core?utm_source=YT&utm_medium=Desc&utm_campaign=cosmologystronomy Cosmology & Astronomy on Khan Academy: The Earth is huge, but it is tiny compared to the Sun (which is super huge). But the Sun is tiny compared to the solar system which is tiny compared to the distance to the next star. Oh, did we mention that there are over 100 billion stars in our galaxy (which is about 100,000 light years in diameter) which is one of hundreds of billions of galaxies in just the observable universe (which might be infinite for all we know). Don't feel small. We find it liberating. Your everyday human stresses are nothing compared to this enormity that we are a part of. Enjoy the fact that we get to be part of this vastness! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Cosmology & Astronomy channel: https://www.youtube.com/channel/UChNPnEkW8LYZ5Rwi8_A2-DA?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Comments
-
goood
-
Thankyou this video was extremely useful in my assessment
-
tysm
-
thank you very much for making this video!!! it helped me a lot!!
-
what about a seismic wave travelling in a steel beams, originated from nuclear underground blast? can that turn the steel into dust?
-
I learned more from an eight minute video than I did in
two days of class lecture...thanks a lot!!! -
If you like this video u can go drink bleach
-
My class thought it was boring :/
-
Khan University I love you! Again, have successfully helped me understand things my brain could wrap around before, now understand! Thank you!
-
i think i'll do well in my geography test now
-
Just wow
-
hmm interestin
-
i hate science
-
Even after 4 years his videos are still watched.
-
Hope you don't mind me asking, but what are your credentials?
Are you a P.E. in Civil Engineering or a Structural Engineer? Seismologist? Geologist?
Thanks!! -
Dude you are the bomb
-
what don't you know, i mean seriously dude
-
Very Very helpful! THANKS SO MUCH!! :D
-
YOU SHOULD KILL YOURSELF BECAUSE MY TEACH MADE ME WATCH THIS
-
What I wanna do in this video...
8m 38sLenght
272Rating