Space-Paper 2 Flashcards
1
Q
How do stars form
A
A cloud of dust pulled together
Stars get hot enough for fusion to start
2
Q
Why is a star stable during its main sequence stage
A
Inward force of gravity is balanced by an outward force produced by the energy of fosion
3
Q
What is the relation between radius of orbit and orbital speed
A
Larger the radius of orbit=Lower orbital speed
4
Q
What is the red shift effect
A
The observation that the wavelength of light from distance galaxies has increased
