Question 1

Einstein's general theory of relativity suggests that

Accepted Answer

A)  the universe is round. 
B)  light travels at a constant speed. 
C)  nothing can travel faster than the speed of light. 
D)  the fabric of space is curved by gravity. 
A)  the universe is round. 
B)  light travels at a constant speed. 
C)  nothing can travel faster than the speed of light. 
D)  the fabric of space is curved by gravity.

Question 2

If inflation had not taken place,the observable universe would have had to been

Accepted Answer

A)  relatively dense after the Big Bang. 
B)  relatively small after the Big Bang. 
C)  relatively large after the Big Bang. 
D)  relatively hot after the Big Bang. 
A)  relatively dense after the Big Bang. 
B)  relatively small after the Big Bang. 
C)  relatively large after the Big Bang. 
D)  relatively hot after the Big Bang.

Question 3

If space has a flat geometry,what will happen to two initially parallel flashlight beams as they traverse billions of light-years of space?

Accepted Answer

A)  They will remain parallel. 
B)  They will gradually diverge (move apart)to a maximum separation,and then gradually converge and cross. 
C)  They will gradually converge (move together)and eventually cross. 
D)  They will gradually diverge (move apart). 
A)  They will remain parallel. 
B)  They will gradually diverge (move apart)to a maximum separation,and then gradually converge and cross. 
C)  They will gradually converge (move together)and eventually cross. 
D)  They will gradually diverge (move apart).

Question 4

Homogeneity means

Accepted Answer

A)  viewing a blueshift in one direction and a redshift in the opposite direction. 
B)  accelerating over time. 
C)  every region is the same as every other region. 
D)  looking the same in every direction. 
A)  viewing a blueshift in one direction and a redshift in the opposite direction. 
B)  accelerating over time. 
C)  every region is the same as every other region. 
D)  looking the same in every direction.

Question 5

The Big Bang explains why so much helium exists in the universe when it could not have been created by hydrogen fusion in stars alone.

Accepted Answer

A) True 
 B)False

Einstein's general theory of relativity suggests that

If inflation had not taken place,the observable universe would have had to been

If space has a flat geometry,what will happen to two initially parallel flashlight beams as they traverse billions of light-years of space?

Homogeneity means

The Big Bang explains why so much helium exists in the universe when it could not have been created by hydrogen fusion in stars alone.

Predicting the Motions of the Stars, Sun, and Moon

Decoding the Hidden Messages in Starlight

Analyzing Scales and Motions of the Universe

Exploring Our Evolving Solar System

Uncovering Earths Systems

Exploring Terrestrial Surface Processes and Atmospheres

Observing the Dynamic Giant Planets

Looking for Life Beyond Earth

Probing the Dynamic Sun

Observing Properties of Distant Stars

Inferring Patterns in Star Life Cycles

Predicting the Violent End of the Largest Stars

Exploring Our Galaxy

Investigating Other Galaxies

Filters

Exam 15: Observing the Evolution of the Universe

Einstein's general theory of relativity suggests that

If inflation had not taken place,the observable universe would have had to been

If space has a flat geometry,what will happen to two initially parallel flashlight beams as they traverse billions of light-years of space?

Homogeneity means

The Big Bang explains why so much helium exists in the universe when it could not have been created by hydrogen fusion in stars alone.

Predicting the Motions of the Stars, Sun, and Moon

Decoding the Hidden Messages in Starlight

Analyzing Scales and Motions of the Universe

Exploring Our Evolving Solar System

Uncovering Earths Systems

Exploring Terrestrial Surface Processes and Atmospheres

Observing the Dynamic Giant Planets

Looking for Life Beyond Earth

Probing the Dynamic Sun

Observing Properties of Distant Stars

Inferring Patterns in Star Life Cycles

Predicting the Violent End of the Largest Stars

Exploring Our Galaxy

Investigating Other Galaxies

Filters