General Relativity

What is the equivalence principle? 

• gravity and acceleration are the same thing
• constant speed and at rest are the same thing
• gravity is curvature of space
• gravity and constant velocity are the same thing

According to Newton, gravity was a force.... According to Einstein, gravity is a ________ of space itself.  

• force
• curvature
• mystery
• constant velocity

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What does gravity do to time?

• speeds it up
• slows it down
• nothing

At rest on the Earth would feel exactly like ______________.  

• Being on a rocket in space moving at a constant velocity.
• Being on a rocket in space accelerating upwards at 9.8 m/s2
• Being on a rocket in space that is at rest.
• Being at rest on Jupiter

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Does a beam of light 'fall' if it is moving through a gravitational field?

• Yes
• No

Finish this phrase "Matter tells spacetime how to curve, spacetime tells matter how to ______"

• move
• collapse
• expand
• rest

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NGSS.HS-PS2-4

Which theory explains the geometric description of gravity as a curvature of spacetime around massive bodies? 

• Theory of Special Relativity
• Law of Universal Gravitation
• Theory of General Relativity
• Photoelectric Theory 

If you were out in space and wanted to simulate the feeling of Earth's gravity, what would be the best way to do it?

• Accelerate upwards at 9.8 m/s²
• Travel at a constant velocity
• Travel at the escape velocity of Earth
• go in orbit around a large star

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NGSS.HS-PS2-4

In the movie Interstellar, the main character was on a planet that was close to a black hole for a short time while his young daughter remained on Earth.  Based on what you know about gravity and time, OR your knowledge of the movie... what happened?

• When he got back to Earth, his daughter was older than he was
• When he got back to Earth, his daughter was the same age but he was younger
• When he got back to Earth, his daughter wasn't even born yet.  
• When he got back to Earth his daughter was just being born.  

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NGSS.HS-PS2-4

Clocks closer to a gravitational source run ______

• slower
• faster
• the same