Science.38-42.Stubbington

3. Apollo 10 orbited the Moon (Number) times before returning to earth
8. Earth was formed 4.6 ___ years ago
9. Another word for "orbit"
10. Lies 40-50 km above Earth's surface
11. What is the acronym for the module tested on Apollo 7
12. The mean plane of Earth's orbit around the Sun
17. The magnetic poles ___ 40 km a year
18. Layer below the crust
19. Geologists indirectly determine the composition of our planet by observing ___ waves
22. Rock slabs thousands of miles across that cause continents to move
26. The ___ effect is caused by burning of coal and oil
27. How many planets are in the solar system?
28. Orbits the sun, sufficient mass to be round, has own orbital path
30. Lies 50-80 km above Earth's surface
32. Sun and all objects are gravitationally bound in this
33. Particles move rapidly in two donut shaped regions called the Van ___ belts
34. A ___ planet is nearly round and does not clear the region around its orbit

1. The oldest rocks discovered were found in this country
2. Apollo 11 was the ___ Moon landing!
4. Apollo (number) became first manned mission to orbit the Moon and return
5. Gus Grissom, Ed White, and Roger Chaffee died in a cabin ___ on Apollo 1
6. Everything on Earth's surface lies inside of this
7. Shields Earth's organisms from UV radiation interacting with oxygen molecules
13. Thin, outermost, solid layer of Earth
14. Deepest spot in the ocean
15. The ___ contains 78% nitrogen, 21% oxygen, 1% other gases
16. Central layer of Earth made of iron and nickel
20. Region of magnetic forces that affects a compass needle
21. This is kept partly ionized by solar UV radiation
23. Common unit of atmospheric pressure
24. In 2006 became a dwarf planet
25. 70% of the Earth is covered in this
27. Highest point on Earth
29. Apollo 9 tested ___ capabilities
31. Refrigerators, air conditioners, and some aerosols create ___ in the ozone layer