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8th grade science > Rocks > Flashcards

Rocks Flashcards

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1
Q

How are igneous rocks classified

A

According to shape and mineral content

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2
Q

Can sedimentary rocks contain living things

A

Yes

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3
Q

What does the shape of an igneous rock depend on

A

How the magma cools

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4
Q

T or f

The rocks cycle goes in the same order every time

A

False

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5
Q

T or f

The properties of a sedimentary rock are the same after metamorphism

A

False

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6
Q

What is a rock that’s formed from sediments

A

Sedimentary rocks

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7
Q

What’s a igneous rock

A

Rocks that are formed from cooled and hardened magma

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8
Q

What is an Extrusive rock?

A

Igneous rocks formed when lava cools on the earths surface

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9
Q

Intrusive?

A

Igneous rocks that are formed when magma cools beneath the earths surface

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10
Q

Magma?

A

Melted rocks beneath the earths surface

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11
Q

What is compaction

A

When pressure pushes the sediments together, squeezing air and water out of the spaces between the fragments

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12
Q

What is a foliated structure

A

Rocks with a foliated structure have viable layers and bands

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13
Q

What is metamorphism

A

The process of change in the structure and constitution of a rock

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14
Q

What kind of a rock is shale

A

Sed

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15
Q

What kind of rock is Quartz

A

Igneous

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16
Q

Diorite?

A

Igneous

17
Q

Gabrro

A

Igneous

18
Q

Marble

A

Metamorphic

19
Q

Coal?

A

Sedimentary

20
Q

Obsidian?

A

Igneous

21
Q

Pumice

A

Igneous

22
Q

Gneiss?

A

Metamorphic

23
Q

Sandstone

A

Sedimentary

24
Q

How is coal formed?

A

Formed from ancient plant remains compacted together, made of carbon

25
Q

How is obsidian formed?

A

Formed when magma cools on the earths surface

26
Q

How is pumice formed

A

It’s formed when magma cools and gas bubbles escape

27
Q

Name and explain the rock cycle-essay

A

Cooling of magma into igneous rock👉🏼when igneous rocks are exposed to earths surface they break into fragmenta👉🏼weathering and erosion👉🏼compaction and cementation forms sedimentary rocks👉🏼when Sed rocks are exposed to extreme heat and pressure👉🏼metamorphic 👉🏼metamorphic rocks melt into magma and cycle repeats.

28
Q

5 parts of rock cycle

A

Melting, solidification, weathering and erosion, deposition, compaction and cementation, metamorphism

29
Q

Igneous is the Latin word for what

A

Fire

30
Q

2 main classifications of igneous rocks

A

Malfic and felsic

31
Q

Plastic

A

Flexible

32
Q

Metamorphic rocks?

A

Are formed when the structure and constitution of existing rocks change due to heat pressure and chemical reactions

33
Q

Sedimentary rocks

A

Rocks formed from sediments that have been compacted and cemented together

34
Q

Clastic rocks

A

Sedimentary rocks made of rock particles and fragments deposited by water wind or ice

35
Q

Conglomerate rocks

A

Is a classic rock composed of round pebble sized rock particles they form where sediments are depositors

36
Q

Definition of weathering

A

When forces of weather break down rocks into sediments

37
Q

What can rocks teach us about Gods creation

A

The rock cycle is so detailed and planned out that it can not just be a coincidence, the cycle shows that there must be a overall creator of the earth-God

38
Q

How are igneous rocks formed?

A

When magma hardens

8th grade science (8 decks)

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