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Earth Science 1

Science Fusion - Unit 4 Flash Cards

QuestionAnswer
What are the three compositional layers of the Earth? Core, mantle, and crust.
What are the two types of crust? Continental and oceanic. The oceanic crust is denser, both contain elements of oxygen, silicon, and aluminum. The oceanic crust has twice as much iron, calcium, and magnesium.
Define the mantle. It is made of hot, slow-flowing, solid rock. It is between the crust and core.
Define the process that occurs in the mantle when cooler rock sink and warmer rock rise to the surface. Convection.
What are the five physical layers of Earth? Lithosphere, Asthenosphere, Mesophere, Outer Core, and Inner Core.
What is the lithosphere divided into? Tectonic plates.
What physical layer do tectonic plates move on top of? Asthenosphere,
How were the continents formed? From the land-mass Pangea.
What do plate tectonics describe? The large scale movements of Earth's lithosphere. It explains how and why features of Earth's crust form and continents move.
Created by: moonicorngirl