Change temperature, composition, and thickness of plates.
Once students begin to grasp "relative" dating, they can extend their knowledge of geologic time by exploring radiometric dating and developing a timeline of Earth's history.
Topics Plate Tectonics Crust Lithosphere Mantle Density Buoyancy Earth Science Description Explore how plates move on the surface of the earth.
As alpha particles are released during radioactive decay, the mass of the atom decreases by 4, and the atomic # decreases by 2.
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