1Y: The Earth Surface

Question 1

What is the crust?

Answer 1

• The crust is the outside layer.
• It is made of solid rock.
• The oceans and continents lie on top of the crust.

Question 2

What is plate tectonics?

Answer 2

Plate tectonics is the study of plates and their movements.

Question 3

What is a plate boundary?

Answer 3

The line where two plates meet is called a plate boundary.

Question 4

What is a continental plate?

Answer 4

The plates with land on top are called continental plates.

Question 5

What is an oceanic plate?

Answer 5

The plates with oceans on top are called oceanic plates.

Question 6

What is convection currents?

Answer 6

• The magma in the mantle is moved around in a circular motion by convection currents.
• This causes the plates to move.

Question 7

What is the mantle?

Answer 7

1. The mantle lies under the crust.
2. It is made of molten(melted) and semi-molten rock called magma.
3. The magma is moved around by convection currents, like bubbles in a pot of boiling water.

Question 8

What is the core?

Answer 8

• The core is the centre of the Earth.
• It is made of iron and nickel.
• It is the hottest part of the earth at 6,000oC.
• The core can be divided into the inner and outer core.

Question 9

What is magma?

Answer 9

Magma is molten(melted) or semi-molten rock. The magma is moved around by convection currents.

Question 10

What is pangea?

Answer 10

• Pangea is the name given to the supercontinent that existed before the process of plate tectonics separated each of the continents into their current configuration.
• Pangea means ‘All Land’.
• The first person to come up with the idea was a German called Alfred Wegener.

Question 11

What is continental drift?

Answer 11

Pangea broke up and the continents moved to the positions thay are in today. This was called continental drift.