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Chemistry 1 > Rocks and their formation > Flashcards

Rocks and their formation Flashcards

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1
Q

What make up the earths crust?

A

Rocks

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2
Q

What are the three categories of rocks called?

A

Sedimentary, metamorphic and igneous

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3
Q

How are igneous rocks formed?

A

When magma or lava solidifies?

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4
Q

What is liquid rock beneath the earths surface called?

A

Magma

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5
Q

What is liquid rock called when it is on the earths surface?

A

Lava

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6
Q

Why are igneous rocks hard to break?

A

They are made up of inter locking crystals.

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7
Q

Why are igneous rocks resistant to erosion?

A

They are made up of interlocking crystals.

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8
Q

What are igneous rocks made up of?

A

Interlocking crystals

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9
Q

Are the crystals in an igneous rock big or small if the magma/lava solidifies quickly?

A

Small

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10
Q

Are the crystals in an igneous rock big or small if the magma/lava solidifies slowly?

A

Big

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11
Q

Do igneous rocks erode easily?

A

No

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12
Q

Do igneous rocks break easily?

A

No

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13
Q

How are sedimentary rocks formed?

A

Sedimentary rocks are formed when layers of sediment are compacted over a very long time by being buried under more layers.

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14
Q

Which type of rock erodes most easily : sedimentary, metamorphic or igneous?

A

Sedimentary

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15
Q

What shape are the grains that sedimentary rocks are made of ?

A

Round

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16
Q

What rock would you find fossils in ?

A

Sedimentary

17
Q

Give an example of an igneous rock with small crystals

A

basalt

18
Q

Give an example of an igneous rock with big crystals

A

granite

19
Q

give 2 examples of sedimentary rocks

A

Chalk and marble

20
Q

Explain how metamorphic rocks are from and give an example of a metamorphic rock.

A

Metamorphic rocks are formed from existing rocks by the action of heat (from being buried or from near by magma) and/or pressure (from being buried), which causes new interlocking crystals to grow. Marble is a metamorphic rock which is formed from chalk or limestone.

21
Q

Name 3 natural forms of calcium carbonate

A

chalk, limestone, marble

Chemistry 1 (12 decks)

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