1. Exploring our Solar System P2f part 1

4. The Universe Moon Cluster Star Meteor Sun Universe Earth Asteroid Galaxy Planet Can you put them in order of size?

5. Universe

6. Universe Cluster Galaxy Star and Sun Planet and Earth Moon Asteroid Meteor Our universal address would be: Weatherhead high School, Breck road, Wallasey, CH44 3HS, England, Europe, Earth, Sol, Milky Way Galaxy, Andromeda Cluster, The Universe.

7. Galaxies

10. Elliptical

11. Spiral

12. Barred Spiral

13. Irregular

15. Black Holes

19. Satellites Path followed by satellite Path followed if gravity switched off Pull of gravity Earth

20. Useful orbits There are TWO main orbits that are useful called POLAR and EQUATORIAL . POLAR -The orbit is close to the Earth, only just above the atmosphere. With a good camera you can see the headlines on a newspaper!

21. Because the Earth spins the satellite will ‘see’ every part of the Earth once every 24 hours . This orbit is used for spy and weather satellites. Polar orbits

22. Equatorial orbits At the right distance the satellite will take 24 hours to orbit the Earth. Because the Earth is also spinning once each 24 hours the satellite stays above the same place on the Earth all the time. We call this a GEOSTATIONARY orbit. This orbit is used for communication satellites, like Sky TV.

24. This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.