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Geography > Volcanoes Key words+ > Flashcards

Volcanoes Key words+ Flashcards

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1
Q

Volcano

A

An opening in the ground/crack in the crust from which magma, ash, gas & smoke erupts. Often looks like a mountain.

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2
Q

Volcanic bomb

A

A large piece of molten rock erupted from a volcano.

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3
Q

Main vent

A

The main underground crack in the rock through which the magma erupts.

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4
Q

Crater

A

The opening at the top of a volcano.

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5
Q

Magma chamber

A

The area deep under a volcano where the mega builds up.

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6
Q

Active

A

A volcano which is erupting or has erupted in the recent past.

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7
Q

Dormant volcano

A

A volcano that is sleeping or may erupt soon.

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8
Q

Extinct

A

A volcano which will never erupt again.

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9
Q

Cone shaped volcano

A

A tall steep sided volcano built up of layers of rock & ash from past eruptions.

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10
Q

Shield volcano

A

A wide low lying volcano formed when the lava is very runny.

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11
Q

Lava/lava flow

A

Magma which has been erupted, so on the surface of the earth.

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12
Q

Magma

A

Molten (liquid) rock found under the crust of the earth.

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13
Q

Mantle

A

The layer of molten rock found between the crust & the core.

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14
Q

Pyroclastic flow

A

A super-heated cloud of gas, smoke & rocks erupted from a volcano.

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15
Q

Lahar

A

A volcanic mud flow.

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16
Q

Tectonic plate

A

A large chunk or slab of the earth’s crust.

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17
Q

Plate boundary

A

The crack/gap between two tectonic plates where they meet.

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18
Q

Crust

A

The solid outer layer of the earth.

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19
Q

Core

A

The inner, hottest part of the Earth

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20
Q

Destructive plate boundary

A

When two tectonic plates crash into each other. One plate if forced down under the other plate. Causes violent earthquakes & volcanoes.

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21
Q

Constructive plate boundary

A

Formed when two tectonic plates move apart & a volcano erupts between the plates. Causes volcanoes.

22
Q

Fold mountain

A

Mountains created when two tectonic plates crash into each other

23
Q

Ocean trench

A

A deep part of the ocean found along a destructive plate boundary.

24
Q

Pacific Ring of fire

A

A destructive plate boundary found all the way around the Pacific Ocean containing lots of active volcanoes.

25
Q

Mid-Atlantic Ridge

A

A ridge of volcanoes & islands (eg Iceland) found along a constructive plate boundary in the middle of the Atlantic Ocean.

26
Q

An opening in the ground/crack in the crust from which magma, ash, gas & smoke erupts. Often looks like a mountain.

A

Volcano

27
Q

A large piece of molten rock erupted from a volcano.

A

Volcanic bomb

28
Q

The main underground crack in the rock through which the magma erupts.

A

Main vent

29
Q

The opening at the top of a volcano.

A

Crater

30
Q

The area deep under a volcano where the magma builds up.

A

Magma chamber

31
Q

A volcano which is erupting or has erupted in the recent past.

A

Active

32
Q

A volcano that is sleeping or may erupt soon.

A

Dormant volcano

33
Q

A volcano which will never erupt again.

A

Extinct

34
Q

A tall steep sided volcano built up of layers of rock & ash from past eruptions.

A

Cone shaped volcano

35
Q

A wide low lying volcano formed when the lava is very runny.

A

Shield volcano

36
Q

Magma which has been erupted, so on the surface of the earth.

A

Lava/lava flow

37
Q

Molten (liquid) rock found under the crust of the earth.

A

Magma

38
Q

The layer of molten rock found between the crust & the core.

A

Mantle

39
Q

A super-heated cloud of gas, smoke & rocks erupted from a volcano.

A

Pyroclastic flow

40
Q

A volcanic mud flow.

A

Lahar

41
Q

A large chunk or slab of the earth’s crust.

A

Tectonic plate

42
Q

The crack/gap between two tectonic plates where they meet.

A

Plate boundary

43
Q

The solid outer layer of the earth.

A

Crust

44
Q

The inner, hottest part of the Earth

A

Core

45
Q

When two tectonic plates crash into each other. One plate if forced down under the other plate. Causes violent earthquakes & volcanoes.

A

Destructive plate boundary

46
Q

Formed when two tectonic plates move apart & a volcano erupts between the plates. Causes volcanoes.

A

Constructive plate boundary

47
Q

Mountains created when two tectonic plates crash into each other

A

Fold mountain

48
Q

A deep part of the ocean found along a destructive plate boundary.

A

Ocean trench

49
Q

A destructive plate boundary found all the way around the Pacific Ocean containing lots of active volcanoes.

A

Pacific Ring of fire

50
Q

A ridge of volcanoes & islands (eg Iceland) found along a constructive plate boundary in the middle of the Atlantic Ocean.

A

Mid-Atlantic Ridge

Geography (5 decks)

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