planet formation Flashcards
1
Q
- what happens during the formation of planets
A
solar system begins to form around stars
2
Q
- how does it start
A
with the death of a star
3
Q
- what does a star produce after its death
A
a large stellar nebula of elements
4
Q
- what elements does the large stellar nebula have
A
iron, carbon, silicates, hydrogen
5
Q
- what does gravity do to the nebula
A
contracts it
6
Q
- what does the contraction form
A
protostar and planetary disc
7
Q
- what happens within the planetary disc
A
elements accrete and forms planets
8
Q
- what happens when the star begins fusion
A
energy releases, causing solar wind blowing away excess gas and dust
9
Q
- what remains and orbits around the star/sun
A
planets and moons
10
Q
hot in centre and cool around the edges
A
planetary disc
