Key Words

2. The end of a magnet that points south if the magnet can move freely. Often just called the south pole.
5. hemisphere The half of the Earth with the North Pole in it.
7. field The space around a magnet where it can affect magnetic materials or other magnets.
9. An imaginary line around the middle of the Earth.
10. Half of a sphere – the shape you would get if you cut a solid ball in half.
11. The volume around something where a non-contact force can affect things.
15. The planet we live on.
16. A natural satellite of a planet.
17. Push away.
19. A magnetised piece of metal that can swing around. One end always points north.
21. path that a planet takes around a star, or the path that a moon or satellite takes around a planet.

1. star that the Earth orbits.
3. The different shapes the Moon seems to have at different times.
4. Two things pulling towards each other.
6. The end of a magnet that points north if the magnet can move freely. Often just called the north pole.
8. way of showing or representing something that helps you to think about it or to find out about it.
12. oval-shaped
13. lines Lines drawn to show which way a magnetic field acts.
14. System star with planets and other objects orbiting around it.
18. large object orbiting a star.
20. huge ball of gas that gives out energy – we see some of the energy as light.