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Earth & Minerals
Topic Three, Lesson 1 and 2: Earth's Interior and Minerals
Term | Definition |
---|---|
seismic wave | vibrations that travel through Earth carrying the energy released during an earthquake. |
crust | the layer of rock that forms Earth's outer surface. |
mantle | the layer of hot, solid material between Earth's crust and core. |
outer core | a layer of molten iron and nickel that surrounds the inner core of Earth. |
inner core | a dense sphere of solid iron and nickel at the center of Earth. |
evidence | support or proof of something; can be direct or indirect. |
elements | the smallest or most basic parts of something. |
mineral | a naturally occurring solid that can form by inorganic processes and that has a crystal structure and a definite chemical composition. |
crystal | a solid in which the atoms are arranged in a pattern that repeats again and again. |
crystallization | the process by which atoms are arranged to form a material with a crystal structure. |
organic | refers to a material that is living or comes from living things. |