5 Einstein and Relativity (Special and General)

Who was the creator of a special theory of relativity?

• Albert Einstein

• Marie Curie

• Sir Isaac Newton

• Michelson and Morley

We do not usually observe relativistic effects in our daily lives because 

• we are moving at speeds much less than c. 
• we are much larger than atoms. 
• we are much heavier than elementary particles. 
• we are much lighter than stars. 

E=MC² is a formula that...

• describes how mass warps spacetime

• describes the relationship between acceleration and gravitational pull

• describes mass and energy as different manifestations of the same thing (like 2 sides of a coin)

• describes the relationship between the event horizon and the singularity of a black hole

What does the relativity of simultaneity say?

• There can NEVER be agreement on the simultaneity of events viewed from different reference point

• If two events occur at the same time in one reference frame, they will occur at the same time in all reference frames.

• There is ALWAYS agreement from all frames of reference on the simultaneity of events

When you approach a light source, the light from that source has a speed

• greater than c.

• less than c.

• equal to c.

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Compared to clocks in a stationary reference frame moving clocks run:

• faster

• slower

• at the same rate

There are two twins on Earth. One flies off on a spacecraft traveling 90% of 'c' while the other twin stays on Earth. Which of the following is TRUE?

• The twin on the spacecraft will age more slowly than the Earth-bound sibling

• Time in each frame of reference proceeds differently at different speeds

• This is an example of the 'Twin Paradox'

• All answers are true

The speed of light _________________.

• is constant in all frames of reference

• changes based on frame of reference

• speeds up even faster in different frames of reference

• stops when in different frames of reference

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The speed of light (c) =

• 186,282 miles per second

• 300,000,000 meters per second

• 3.0 x 10⁵ km/sec (kilometers per second)

• All answers are correct and equal to one another

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What is the formula for special relativity?

• $E=MC^2$

• $E=MS^2$

• $C=ME^2$

• $M=EC^2$