1. The PlanetsMrs. Cothery’s 7th grade class 2. The Solar System Our solar system is made up of eightindividual and unique planets and is nearlyfive billion years old.…

Slide 1Light Unit David B. Brown 6C Slide 2 Wave Definitions There is the crest, the point at the top The trough, the point at the bottom, (opposite of crest) Medium the…

1. THE EARTH’S ATMOSPHERE 2. ATMOSPHERE Shields us against ultra violet rays, bombardment ofmeteors, meteorites, and other objects from outerspace. Gases in the atmosphere…

Slide 1 An Introduction to Cosmic Rays, Relativity, and MARIACHI M. Marx November 16, 2006 Slide 2 Radioactivity Radiactive material is classified according to its activity…

November 4, 2013 Test day November 4, 2013 Test day All you need is something to write with! Answer Key 1. A 2. F 3. D 4. G 5. D 6. H 7. B 8. J 9. H 10. A F 12. B 13. J 14.…