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Vocab for Chapter 2

solar system the sun and the group of bodies that revolve around it
planets major bodies that orbit a star
moons smaller objects that orbit the planets
satellite a body that orbits a larger body
solar energy energy from the sun which reaches earth as light and heat
rotation one complete spin of earth on its axis
revolution one elliptical orbit of earth around the sun
tropic of capricorn the parallel 23 1/2 degrees SOUTH of the equator
tropic of cancer the parallel 23 1/2 degrees NORTH of the equator
arctic circle parallel 66 1/2 degrees north of the equator
antartic circle the parallel 66 1/2 degrees south of the equator
tropics warm, low altitude areas near the equator
solstice the time that earths poles point at the greatest angle toward or away from the sun
polar regions high latitude, cold regions around the north and south poles
equinox the time when both earths poles are at a 90 degree angle from the sun and the suns direct rays strike the equator
atmosphere the envelope of gasses that surround a planet like earth
lithosphere solid crust of the earth
hydrosphere earths water in all its forms
biosphere the part of earth that includes all life forms
environment combination of earths four spheres, including all of the biological, chemical, and physical conditions that affect life.
Created by: brittney143