Rocks Flashcards

0
Q

What are the four layers of the earth?

A

Crust
Mantle
Outer core
Inner core

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1
Q

What is magma

A

Molten rock (a little bit melted) rock that is underground.

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2
Q

Which layers of the earth can only be studied by indirect means?

A

The outer & inner core

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3
Q

What Is the composition of the outermost layer of the earth?

A

The crust is made of aluminum, calcium, iron, magnesium, oxygen, silicon.

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4
Q

What is the composition of the innermost layer?

A

The core is made of iron and nickel.

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5
Q

What happens to the temperature of the rocks as the layers go deeper into the earth?

A

The rocks get hotter.

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6
Q

In which layer does erosion take place?

A

The crust, because that is where the wind and the rain are.

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7
Q

In what areas is the outermost layer of the earth the thinnest?

A

The oceanic.

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8
Q

Where is it the thickest?

A

The Continental.

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9
Q

Which layer has the greatest mass?

A

The Continental.

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10
Q

The continual process by which new rock forms from old rock material is

A

The rock cycle.

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11
Q

The process by which wind, water, ice or gravity transports soil and sediment from one location to another is?

A

Erosion.

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12
Q

The process in which material is laid down is called?

A

Deposition.

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13
Q

The minerals a rock contains determines the ——– of that rock?

A

Composition.

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14
Q

The size Shape and positions of the grains that make up the rock determine a rocks ————-.

A

Texture.

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15
Q

———–rock forms when hot liquid rock, or magma cools & solidifies.

A

Igneous rock

16
Q

When magma INTRUDES, or pushes into surrounding rock, below the earth’s surface, and cools, the rock that forms is called?

A

Intrusive igneous rock

17
Q

Igneous rock that forms from magma that ERUPTS, or EXTRU

DES, onto the earth’s surface is called?

A

Extrusive igneous rock

18
Q

The most noticeable feature of sedimentary rock is its layers or?

A

Strata

19
Q

——– is the process in which sedimentary rocks are arranged in layers.

A

Stratification

20
Q

——- is the process in which objects are changed by weather affecting the color, texture, composition, or form of that object.

A

Weathering

21
Q

Being pushed or pressed together tightly is called?

A

Compaction.

22
Q

Being glued or stuck together?

A

Cementation

23
Q

Being solidified into another solid

A

Solidification

24
Q

Solid, naturally occurring, mixture of minerals?

A

Rock

25
Q

The thin, solid outer layer of the earth?

A

Crust

26
Q

Rocky layer between the crust and the core of the earth?

A

Mantle

27
Q

The central part of the earth below the middle

A

Core

28
Q

Rock formed by or from deposits of sediment by compactation and cementation

A

Sedimentary rocks

29
Q

Rock altered by pressure and heat

A

Metamorphic rocks

30
Q

What is magna

A

It is hot rock