Tectonics

Question 1

Name the 4 layers of the earth

Answer 1

Inner core, Outer core, Mantle and Crust

Question 2

What are tectonic plates?

Answer 2

Tectonic plates are ‘floating’ on the semi-molten layer of rock in the magma. Convection currents within the mantle cause the plates to move.

Question 3

Name all of the Earth’s tectonic plates

Answer 3

Pacific, North American, South American, Antarctic, African, Indo-Australian and Eurasian

Question 4

Describe a constructive plate boundary

Answer 4

Two tectonic plates move apart from one another.

The gap in the crust causes magma to rise and cool

Earthquakes and volcaneos are found here

Question 5

Describe a destructive plate boundary

Answer 5

When two plates move towards each other, one sinks below the other one (aka subducted).

Volcaneos and earthquakes are found here

Question 6

Describe a conservattive plate

Answer 6

When two plates are moving side by side, in different directions or the same directions but at different speeds

Earthquakes are found here

Question 7

What is the mantle?

Answer 7

The mantle is a semi-molten layer of rock on which the tectonic plates are ‘floating’.

Question 8

What is the inner core?

Answer 8

Heat from the core causes convection currents in the mantle, where the heated rock rises towards the crust.

Question 9

What is the crust?

Answer 9

This causes the tectonic plates to move either towards or away from one another