Deck 27: General Relativity

Question 1

The idea that the effect of gravity on you is the same as being in an accelerating reference frame is called

A) free fall
B) the principle of equivalence
C) gravitational lensing
D) time dilation

Answer 1

the principle of equivalence

Question 2

The curvature of space under general relativity can be caused by both _____ and _____.

A) mass,light
B) light,heat
C) energy,mass
D) gamma rays,radio waves

Answer 2

mass,light

Question 3

Mercury does not exactly repeat its orbit. This would not happen if Mercury's orbit were

A) elliptical
B) circular
C) more tilted
D) less tilted

Answer 3

elliptical

Question 4

Light moving away from a star will lose energy. This is due to

A) interaction with the interstellar medium.
B) a gravitational blueshift.
C) a gravitational redshift.
D) the temperature drop as the light moves into space.

Question 5

Gravitational deflections can focus and brighten the light from distant objects. This is called
_____________________.

Question 6

Gravitational waves have been detected directly.

Question 7

General relativity explains gravity as the flow of space.