P16- Space Flashcards
1
Q
Main sequence
A
The life stage of a star which it radiates energy because of the fusion of hydrogen
2
Q
Centripetal force
A
The resultant force towards turn centre of a circle acting on an object moving
3
Q
Red shift
A
Increase in wavelength of EM waves emitted by a star of galaxy as it moves away
4
Q
Bing bang theory
A
Theory that the universe was created in a massive explosion
5
Q
Doppler effect
A
The change in observed wavelength because of motion
6
Q
Dark matter
A
Margaret in galaxy that cannot be seen
7
Q
Cosmic microwave background radiation
A
Electromagnetic radiation that has been travelling through space since the Big Bang.
