chapter 8 lesson 2-3 science Flashcards

0
Q

Volcanic glass

A

Is a rock that forms when lava cools to quickly to form crystals such as the obsidian

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1
Q

Extrusive rock

A

When a volcanic material erupts and cools and crystallizes on earths surface it forms a type of igneous rock

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2
Q

Intrusive rock

A

Igneous rocks that form as magma cools underground

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3
Q

Compaction

A

The weight from the layers of sediment forces out fluids and decrease the spacing during the process

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4
Q

Cementation

A

When minerals dissolve in water between sediment grains the process

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5
Q

Clastic rock

A

Sedimentary rocks that are made up of broken pieces of minerals

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6
Q

Chemical rocks

A

Forms when minerals crystallized

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7
Q

Biochemical rock

A

Is a sedimentary rock that was foRmed organisms or contains the remains of organisms

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