8th science Earth and Universe Vocab
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Created by:
mgwoodruff on November 5, 2010
Subjects:
Classes:
LBMS 8th science, Melanie Jones, Long Beach Middle School
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17 terms
Terms | Definitions |
|---|---|
 sphere | a round three dimensional object |
| axis | imaginary vertical line around which Earth spins |
| rotation | the spinning of the Earth on its axis |
| revolution | Earth's yearly orbit around the Sun |
| ellipse | an elongated, closed curve |
| solstice | the day when the Sun reaches its greatest distance north or south of the equator |
| equinox | occurs when the Sun is directly above Earth |
| Northern Hemisphere | the half of the Earth north of the equator |
| Southern Hemisphere | the half of the Earth south of the equator |
| climate zones | large regions of specific temperature determined by latitude |
| star | huge ball of burning gas |
| star cluster | group of stars with similar characteristics that are located near each other |
| galaxy | large group of stars, planets, space dust, and gases held together by gravity |
| galactic cluster | a group of tens or hundreds of galaxies |
| black hole | a region of space in which gravity is so strong that nothing can escape its pull |
| Big Bang Theory | the most widely accepted theory for the formation of the universe |
| Light Year | the distance that light travels in one year |
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