Video2

**Before watching **
====What is gravity? It's a force that exist between objects which is proportional to their masses and inverse proportional to the distance between them. ==== ====Who discovered it? Sir Isaac Newton ==== ====How does the Einstein’s Relativity Theory relate with gravity? I am not really sure but i think that when particles travel too fast they don't behave as masses so the gravity does not apply. ==== ====Mention five words you might find in the video ==== gravity, light, speed, newton, relative.

==== **During watching and after watching ** ==== ====1. Click on the following link to watch the video: ==== ====[] ====

2. Which of the words in the question above did you find in the video? List them all of them. gravity, light, speed, newton, relative. ====3. What was the embarrassing secret Newton was holding about gravity? That he dint know how gravity actually works. ==== ====4. The narrator presents some examples in the video. What happens in the first one? What happens to the sun and planets? Explain In the first example when the sun disappears the planets immediately lose the orbit and they start to travel away in something similar to a straight line. <span style="color: #c78bf8; font-family: Tahoma,Geneva,sans-serif; font-size: 15px;">5. What happens in the second one? What happens to the sun and planets? Explain <span style="color: #000000; font-family: arial,helvetica,sans-serif; font-size: 13px; line-height: 19px;">In the second one when the sun disappears he created a wave that travels at the speed light and when that wave hits the earths hi losses his orbit and starts traveling away in something similar to a straight line. <span style="color: #c78bf8; font-family: Tahoma,Geneva,sans-serif; font-size: 15px;">6. Why was Newton’s idea of gravity incorrect for Einstein? <span style="color: #000000; font-family: arial,helvetica,sans-serif; font-size: 13px; line-height: 19px;">Because nothing can travel faster than light not even gravity and newton said that it was an instant force. <span style="color: #c78bf8; font-family: Tahoma,Geneva,sans-serif; font-size: 15px;">7. What is the final definition of gravity given in the video? <span style="color: #000000; font-family: arial,helvetica,sans-serif; font-size: 13px; line-height: 19px;">Its the curve created by objets in the space-time chart. <span style="color: #c78bf8; font-family: Tahoma,Geneva,sans-serif; font-size: 15px;">8. What’s the name Einstein gave to it? <span style="color: #000000; font-family: arial,helvetica,sans-serif; font-size: 13px; line-height: 19px;">General relativity. <span style="color: #c78bf8; font-family: Tahoma,Geneva,sans-serif; font-size: 15px;">9. What’s the difference between Newton’s gravity and Einstein’s gravity? ====

First of all newton never said how gravity actually works, second of all the gravity that newton propose acted immediately and the one that einstein said travel at speed light.