Plate tectonics vitals

Question 1

*Name a real life location where two plates are being pulled apart?

Answer 1

Mid Atlantic Ridge or Iceland

Question 2

*Name the 4 layers of the Earth

Answer 2

Inner core, outer core, mantle and Crust

Question 3

*Name the two types of crust.

Answer 3

Oceanic and Continental

Question 4

*What is the continental crust made out of?

Answer 4

Granite

Question 5

*What is the oceanic crust made out of?

Answer 5

Basalt

Question 6

*Who designed a theory based around the Earth’s plates moving?

Answer 6

Alfred Wegener

Question 7

*The theory of the plates moving was called?

Answer 7

Continental drift

Question 8

*Once upon a time, the land used to be ONE huge land mass. What was this called?

Answer 8

Pangaea

Question 9

*Name two types of volcanoes.

Answer 9

Shield and composite.

Question 10

*Name 5 key differences between the two types of volcanoes.

Answer 10

SHIELD - gentle sides, runny lava (low viscosity), found at a constructive plate boundary, mainly lava erupted, more gentle eruptions. COMPOSITE - steep sides, sticky lava (high viscosity), destructive plate boundary, violent eruptions, ash and rock erupted (pyroclastic flow).

Question 11

What are the volcano side made up of?

Answer 11

Layers of ash and lava from past eruptions

Question 12

Where is the magma collected underneath a volcano?

Answer 12

Magma chamber

Question 13

*During an earthquake, what is the focus?

Answer 13

The point at which the rocks move.

Question 14

*During an earthquake, what is the epicentre?

Answer 14

Directly above the fouc. On the surface of the earth.

Question 15

In the Earth’s structure, what is the hottest layer?

Answer 15

Inner Core

Question 16

This is the thin, outer layer of the Earth.

Answer 16

Crust

Question 17

The upper part of this layer is hard rock, but lower down it has begun to melt.

Answer 17

Mantle

Question 18

Part of this layer is made of semi-molten rock called magma.

Answer 18

Mantle

Question 19

Structure of a volcano: within the Earth�s crust, a pool of magma (molten rock) can develop. This forms a space called a �

Answer 19

Magma Chamber

Question 20

Structure of a volcano: More pressure from inside the Earth causes the magma to rise up through the crust, creating a tube called the �

Answer 20

Main vent

Question 21

Structure of a volcano: If enough pressure builds up, the magma will erupt out of the �� at the top of the volcano.

Answer 21

crater

Question 22

Name two hazards from a volcanic eruption?

Answer 22

Lava flow, ash cloud

Question 23

Structure of a volcano: what are the sides of the volcano made out of?

Answer 23

Layers of ash and lava from past eruptions

Question 24

Structure of a volcano: Sometimes there might be a blockage in the main vent, meaning the magma pushes through the side of the volcano, creating a �

Answer 24

Secondary cone

Question 25

True or false: A steep-sided volcanic cone built from both lava and pyroclastic materials, e.g. ash, is called a composite volcano.

Answer 25

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