Physics Unit 9 Study Guide

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Part One: MATTER 1. What is the particle theory? All matter is made up of tiny particles. All particles of one substance are the same. Diff. substances are made of diff. particles. The particles are always moving. The more energy the particles have, the faster they move there is an attractive force between the particles. These forces are stronger when the particles are closer together. 2. What is a compound? Compounds are pure substances that contain two or more different elements in a fixed proportion. They are formed when elements combine together in chemical reactions. 3. State of Mater: One of the physical properties of matter is it’s state---whether it is a solid, liquid, or…show more content…
Heterogeneous mixture SPACE 11. Planets in the order of smallest to largest: Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, Jupiter 12. Order of planets: Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, *Pluto 13. Stars life cycle: Birth, early life, major part of life, old age, death, remains. 14. Causes of seasons: The Earths rotation. 15. What’s a light year? The distance that light rays travel in one year 16. Star colors: Blue, Bluish-white, white, yellowish-white, yellow, orange, red. 17. ASHLEE’S NOTE. REPRODUCTION. 21. The cell theory: All living thins are composed of one or more cells. The cell is the functional unit of life. All cells come from pre-existing cells. 25. Sexual Reproduction: genetic information from two cells is combined to produce a new organism. Occurs when two specialized sex cells unite to form a fertilized egg called a zygote. 26. A single organism gives rise to offspring with identical genetic information. The cells of t he human body reproduce asexually. 27. Mitosis: zygote, pro-metaphase, metaphase, anaphase, telephase 28. Forty-eight chromosomes are in the human

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