revision what is comic radiation and how is the earth protected from it

REVISION

What is comic radiation and how is the Earth protected from it

How may the Moon have formed (3)

What is a centripetal force and what is the centripetal force acting in space? (2)

What are solar flares, what do they produce in the atmosphere and what can they affect?

(3)

Why can we see stars when they are so far away (2)

Name 3 things that manned spaceships need to provide for the astronauts (3)

Explain why light cannot escape a black hole (1)

What planet is between these two? (1)

Jupiter Uranus

Name two things that unmanned craft can tell us about distant planet

(2)

What are comets made of? (2)

Between which planets do asteroids orbit and why did they not form a planet? (2)

Give three consequences of a large asteroid hitting the Earth (3)

What happens to the speed of a comet as it moves away from the Sun (explain

your answer)? (2)

What is the big bang theory about the start of the universe and explain the

evidence (3)

What will happen when the Sun runs out of fuel (3)?

What happens when a large star runs out of fuel (3)?

What is the link between the distance a galaxy is away from us and how fast it is moving

away ? (1)