Rock Formation Flashcards

1
Q

What are igneous Rocks?

A

Igneous rocks are rocks which have formed due to molten that has cooled and become solid.

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2
Q

What are molten rocks referred to as?

A

Magma.

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3
Q

How are large crystals formed in igneous rocks?

A

When magma cools slowly instead of quickly.

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4
Q

How are small crystals formed in igneous rocks?

A

When lava cools quickly instead of slowly.

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5
Q

What are extrusive igneous rocks?

A

Magma cooled on the surface. Magma cooled quickly. Small crystals. Examples are obsidian and basalt.

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6
Q

What are intrusive igneous rocks?

A

Magma cooled underground. Magma cooled slowly. Large crystals. Examples are granite and gabbro.

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7
Q

Do igneous rocks contain fossils?

A

No.

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8
Q

What are sedimentary rocks?

A

Rocks that are formed from the broken remains of other rocks which join together.

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9
Q

What is the process of sedimentary rocks?

A

Transport > Deposition > Sedimentation > Compaction > Cementation.

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10
Q

Do sedimentary rocks contain fossils?

A

Yes.

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11
Q

What fossils do sedimentary rocks contain?

A

Fossils of the likes of animals and plants.

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12
Q

What are examples of sedimentary rocks?

A

Chalk, Limestone, Shale and Sandstone.

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13
Q

What are metamorphic rocks?

A

Metamorphic rocks form from other rocks that change due to heat or pressure.

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14
Q

Do metamorphic rocks contain fossils?

A

Very rarely, but sometimes they can be present in the original sedimentary rock. However, they may not survive due to heat and pressure.

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15
Q

What is an example of metamorphic rock?

A

Slate, marble, gneiss.

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