Q2nd First Topic Flashcards

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1
Q

3 types of volcanoes

A

Active
Dormant
Extinct

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2
Q

11 vocal structures

A

Ash steam and gas
Crater
Secondary vent
Geyser
Dikes
Volcanic bombs
Magma chamber
Sills
Lave
Conduit
Main vent

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3
Q

Why do volcanoes erup?

A

Magma collects in magma chamber
Magma is added the pressure increase causing fractures
Magma is less dense than surrounding solid rock so rises

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4
Q

2 about plates

A

Plates are made from the LITHOSPHERE
lithosis broken up inyo TECTONIC PLATES which more around on top of the asthenosphere

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5
Q

Liquid and brittle so can structure and buckle

A

Lithosphere

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6
Q

Solid rock but plastic and can flow

A

Asthenosphere

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7
Q

2 types of eruption

A

Effusive
Explosive

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8
Q

Most violent erup

A

Effusive

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9
Q

Moving away each other

A

Divergent boundary

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10
Q

Towards each others

A

Convergent boundaries

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11
Q

Location of earth surface that has experienced active volcanoes

A

Hotspots

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12
Q

When two blocks of the earth

A

Earthquake

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13
Q

The surface where they slip

A

Fault or fault plane

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14
Q

Location below the earth’s surface

A

Hypocenter

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15
Q

Location directly above it on the surface of earth

A

Epicenter

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16
Q

Smaller earthquakes

A

Foreshocks

17
Q

Largest main earthquake

A

Mainshock

18
Q

Largest main earthquake

A

Mainshock

19
Q

Same place as the mainshock

A

Aftershocks

20
Q

Recorded by instruments

A

Seismographs

21
Q

Recording they make

A

Seismogram

22
Q

Size of earthquake

A

Magnitude

23
Q

Shaking from an earthquake

A

Intensity