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Earth's Structure

Science

Earth's Structure Chapter Video

Earth's Structure Chapter Video

basalt

a dark, dense igneous rock
basalt Simple Definition

cementation

a process where sediment grains are cemented together
cementation Simple Definition

clastic rock

sedimentary rock that forms when rock fragments are squeezed together, like sandstone
clastic rock Simple Definition

compaction

the process by which sediments are compressed by the weight of layers above
compaction Simple Definition

deposition

the process of dropping sediment by water or wind
deposition Simple Definition

erosion

the process in which rock is worn away and transported by water, wind or ice
erosion Simple Definition

extrusive rock

igneous rock that forms when lava cools on Earth's surface
extrusive rock Simple Definition

foliated

metamorphic rocks with mineral grains arranged in parallel layers
foliated Simple Definition

granite

a light-colored igneous rock
granite Simple Definition

intrusive rock

igneous rock that forms when magma hardens beneath Earth's surface
intrusive rock Simple Definition

metamorphic rock

the rock that forms when existing rock is changed by heat, pressure, or chemicals
metamorphic rock Simple Definition

nonfoliated

metamorphic rock with mineral grains not arranged in layers
nonfoliated Simple Definition

rock cycle

a process that changes rocks from one form to another
rock cycle Simple Definition

sediment

particles of rock and other materials deposited by water or wind
sediment Simple Definition

sedimentary rock

a rock that forms when sediment is pressed and cemented together
sedimentary rock Simple Definition

stalactite

a deposit that hangs from the roof of a cave
stalactite Simple Definition

stalagmite

a cone-shaped deposit that builds up from the floor of a cave
stalagmite Simple Definition

texture

the size, shape, and grains of a rock
texture Simple Definition

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