Video2

Video 2: The Elegant Universe Einstein's - Relativity ** What is gravity? Gravity is the force exercised by the celestial bodies. Who discovered it? It was discovered by Isaac Newton.
 * 3,5pts too late
 * Before watching **

How does the Einstein’s Relativity Theory relate with gravity? Relativity was disaccord with the old form to perceive the gravity as instantaneous force, then Einstein created a new form to see gravity has curves in the space-time net.

Mention five words you might find in the video 1. Relativity 2. Einstein 3. Gravity 4. Theory 5. Velocity

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 1. Relativity 2. Einstein 3. Gravity 4. Theory 5. Velocity 3. What was the embarrassing secret Newton was holding about gravity? The secret that Newton was holding about gravity was that he really didn´t know what gravity is and how its behavior is.

4. The narrator presents some examples in the video. What happens in the first one? What happens to the sun and planets? Explain. The narrator exemplifies what would happen if the sun disappears, using the Newton´s gravity picture. Knowing that nothing can run faster that light not even gravity. He explain that with Newton´s idea, gravity is a instantaneous force, then if the sun disappears, the planets would go out its orbits instantaneously so contradicting that nothing can run faster that light.

5. What happens in the second one? What happens to the sun and planets? Explain Einstein saw the universe as a space-time net where was posed the celestial bodies, so creating warps in this fabric. Using Einstein´s gravity picture the sun disappearing would provoke a wave which would reach the planets with the time and would push these out of their orbits. And say that gravity is as faster as light.

6.Why was Newton’s idea of gravity incorrect for Einstein? The Newton´s idea of gravity was wrong for Einstein because he had shown that nothing could travel faster that light, and then from the example gravity couldn´t be an instantaneous force.

7. What is the final definition of gravity given in the video? The last definition of gravity from the video is that gravity is the warp created by an object in the space-time fabric of the universe.

8. What’s the name Einstein gave to it? Einstein called it General Relativity

9. What’s the difference between Newton’s gravity and Einstein’s gravity? The difference is that Newton´s gravity is a force that grabs the objects, while Einstein´s gravity is a followed by the objects wave. Then the effect of the Newton´s gravity is instantaneous, while the Einstein´s gravity effect not.