P16 - Space

Question 1

What do stars intially form from?

Answer 1

Clouds of dust and gas

Question 2

Starts initially form from clouds of dust and gas. What is this cloud called?

Answer 2

A Nebula

Question 3

After a nebula forms how does the formation of a star continue?

Answer 3

The force of gravity pulls the nebula together to form a Protostar

Question 4

What is the next process of a formarion of a star after the formation of a protostar?

Answer 4

Temperature rises as star gets denser and more particles collide

Question 5

Explain the formation of a star (6marks)

Answer 5

A cloud of dust and gas form called a nebula.
The force of gravity pulls the nebula together to form a protostar.
The temp rises as the star gets denser.
They collide and become hot enought that hydrogen nuclei undergo nuclear fusion and turn into helium nuclei.
This releases alot of energy and a star is born

Question 6

What is a main sequence star?

Answer 6

When a star enters a long stable period. Where the outward pressure caused by the nuclear fusion, balances the force of gravity pulling everything inwards

Question 7

What happens after several billion years of a main sequence star period?

Answer 7

The hydrogen begins to run out which makes the star swell. This turns it into a Red Giant