Question 1

• Describe Earth’s appearance when it first formed.

• How has Earth’s appearance change since it first formed?

Question 2

Name Earth’s four main layers represented by A-D.

Question 3

Describe the relationship between depth below Earth’s surface and:

• Temperature

• Pressure

• Density

Question 4

• Describe Earth’s crust.

• Describe three differences between continental crust and oceanic crust.

• Draw a labelled diagram showing adjacent sections of continental and oceanic crust.

Question 5

• Name the three layers that make up Earth’s mantle.

• Describe each of the three layers in part (a).

• Compare the chemical compositions of the mantle and crust.

Question 6

Describe Earth’s outer core.

Question 7

Describe Earth’s inner core.

Question 8

• Match the following components of Earth’s internal structure with the correct labels.

asthenosphere • continental crust • inner core • lithosphere • mesosphere • oceanic crust • outer core • upper mantle

• For each component in part (a), indicate whether that region is composed of solid, plastic or liquid material.

Question 9

• What is the lithosphere?

• What are tectonic plates?

• How are tectonic plates able to move?

• What are some consequences of tectonic plate movement?