7.2 Flashcards
1
Q
Big bang
A
theory that universe started with an enormous explosion of energy
2
Q
blue shift
A
compression of light waves due to the motion of stars towards the Earth; blue shift makes light appear brighter than it should
3
Q
cosmic microwave background radiation
A
after glow of the big bang, low energy radiation that fills the universe
4
Q
cosmology
A
study of the history and the structure of the entire universe
5
Q
doppler effect
A
expansion or compression of waves due to the motion of the object making the waves
6
Q
milky way
A
the galaxy in which the solar system is located
7
Q
red shift
A
stretching of light waves due to the motion of stars away from the earth. red shift makes things appear more red than it should
8
Q
steady state theory
A
the infinite universe theory- proven wrong
