Origins of the Universe Flashcards
1
Q
Which piece of evidence supports the Big Bang theory?
A
Evidence that more distant galaxies are moving the quickest supports the Big Bang theory.
2
Q
About how long ago do scientists believe the universe began?
A
13,700 million years
3
Q
According to the Doppler effect, what happens to sound waves emitted at a constant pitch from a car moving towards you?
A
Their frequency increases, so their pitch increases
4
Q
What is the CMBR?
A
Cosmic microwave background radiation
5
Q
Why is the light from distant galaxies red-shifted?
A
They are moving away from us.
