Astronomers and Big Bang Theory

What is a Light Year?

• 6,000,000,000,000 miles
• Distance light travels in a year
• Used for measuring extremely large distances in space
•  All the answers are correct

In relation to us, most galaxies are…

• Moving toward us
• Moving away from us
• Not moving
• exploding

The event that marks the beginning of our known universe (according to science)

• Theory of Evolution
• Big Bang Theory
• Cell Theory
• Blackhole theory

The scientific study of planets, stars, galaxies, and the universe as a whole.

• Astronomy
• Geology
• Cosmology
• Quantum Physics

The change in wavelength of light or sound that is due to the relative motion of the source towards or away from an observer.

• Radar Effect
• Doppler Effect
• Light Effect
• Reflection

What does the Big Bang theory suggest?

• The universe was just there
• The Milky Way is the only solar system
• The universe is continually expanding
• The universe started as a point and is moving towards each other

According to the Doppler effect, what happens to the sound waves in a car moving away from you?

• They move more quickly, so their pitch increases
• Their frequency increases, so their pitch increases
• Their wavelength increases, so their pitch increases

Red shifts are evidence of Big Bang Theory

• True
• False

During the big bang, all of the matter supposedly spread out from a single point.

• True
• False

The age of our universe

• 12-13 million years
• 13-14 billion yers
• 13-14 million years
• 100 million