life cycle of stars Flashcards
1
Q
Energy is released in stars by:
A
Nuclear Fusion
2
Q
Stars form from dust and gas due to:
A
gravitational attraction
3
Q
What is the main element in the Sun?
A
Hydrogen
4
Q
In what period of its life is our Sun?
A
main sequence
5
Q
The Sun is stable because:
A
The forces within it are balanced
6
Q
In around four billion years, what will our Sun become?
A
a red giant
7
Q
After a star becomes a white dwarf, what will it become next?
A
A black dwarf
8
Q
A very massive star may explode at the end of its life. This is a:
A
After a supernova, the remains of a massive star may become a neutron star or a black hole
9
Q
The heaviest element formed during the stable period of a star is:
A
Iron
