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Origins of the Universe
Which piece of evidence supports the Big Bang theory?
The more distant galaxies are moving the slowest.
The more distant galaxies are moving the quickest.
The more distant galaxies are moving towards us.
About how long ago do scientists believe the universe began?
13,700 million years
1,370 million years
137 million years
Why is the light from distant galaxies red-shifted?
They produce more red light than nearby galaxies.
They are moving away from us.
The longer wavelengths are filtered out more by dust.
According to the Doppler effect, what happens to sound waves emitted at a constant pitch from a car moving towards you?
They move more quickly, so their pitch increases
Their frequency increases, so their pitch increases
Their wavelength increases, so their pitch increases
What is the CMBR?
Constant multiple background radiation
Cosmic magellanic background radiation
Cosmic microwave background radiation