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Science > Term 4 Earth Science > Flashcards

Term 4 Earth Science Flashcards

1
Q

Abundance

A

If there is a lot of something, it is described as being abundant

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2
Q

Acid rain

A

Rain that contains dissolved acidic gases such nitrogen oxides and Sulfur dioxide

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3
Q

Atmosphere

A

The layers of gases that surround the earth. The important gases in the atom sphere are nitrogen, oxygen and carbon dioxide

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4
Q

Biological weathering

A

The breaking down of rocks because of the actions of living organisms, such as trees and burrowing animals

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5
Q

Chemical weathering

A

The erosion of rocks by the chemicals that react with minerals

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6
Q

Core

A

The innermost of the earth

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7
Q

The outer layer of the earth on top the mantle

A

Crust

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8
Q

Erosion

A

The wearing of rock, soil or any solid minerals

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9
Q

Extrusive

A

Extrusive rock is formed from lava and magma that cools quickly at the surface

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10
Q

Grain

A

A small particle in a rock

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11
Q

Igneous

A

Rocks that formed under very hot conditions within the earth e.g basalt and obsidian

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12
Q

Intrusive

A

Intrusive rock is formed when hot molten magma is forced it small crack between layers of other types rocks

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13
Q

Lava

A

Molten rock that is released from the earth’s core in a volcano

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14
Q

Magma

A

Molten rock found within the earth

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15
Q

Mantle

A

A zone of hot rock In the interior of the earth located between the outer crust and the molten core.

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16
Q

Metamorphic rock

A

A type of rock formed under intense heat and pressure

17
Q

Permeable

A

Something that allows water to pass through it

18
Q

Porous

A

Lots of void space

19
Q

Sedimentary rock

A

Rocks that are formed through the deposition of sediments

20
Q

Rock cycle

A

All the processes that are included in creating a rock

21
Q

Hardness

A

Restinace of the rock

22
Q

Colour of the mineral

23
Q

Streak

A

The colour of the powdered mineral

24
Q

Lustre

A

The extent to which the surface of the mineral reflects the light

25
Q

Density

A

The amount of matter contained in a specific volume

26
Q

Cleavage

A

The way the mineral splits apart

27
Q

The crystal shape

28
Q

When did Pangea exist

A

240million year ago

29
Q

When was Pannonia formed

A

600 million years ago

30
Q

When did rodinia exist

A

1 billion years ago

31
Q

Properties of the atmosphere

A

A large amount of carbon dioxide
Little or no oxygen
Small amounts of other gases

32
Q

How high is the Stratosphere

33
Q

Where is the Thermosphere

A

1000 km high

34
Q

How high is the Mesosphere

35
Q

Where is the Toposhere

Science (16 decks)

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