Revolution - earth orbits the sun , Rotation - earth turns and spins, 365 days - time for the earth to orbit the sun, 24 hours - time for earth to spin 1 time , moon phases - moon appears to change shape , 1 month - time for moon to orbit the earth, hypothesis - prediction before an experiment, question - first step in the scientific method, observation - what you notice during an experiment, wheel and axle, inclined plane, wedge, screw, pulley, lever, core - The center of the earth, mantle - The second layer of the earth: under the crust, crust - The outside of the earth, atmopshere - layer of air around the earth, hydrosphere - All of the water on the earth, geosphere - All of the land and rock on the earth, tectonic plates - The "puzzle" pieces that make the crust of the earth, volcanos - When lava moves between 2 tectonic plates to the surface, earthquakes - When 2 tectonic plates move very quickly, tsunamis - When an earthquake under the ocean causes a big wave. ,
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Outer space and resources
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Lizblock88
G3
Science
Health and Nutrition
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