Volcanoes, mountains, and earthquakes

Shown here is a chain of volcanic islands known as island arcs. Which plate boundary causes island arcs?

• convergent boundary

• divergent boundary

• transform boundary

What can cause a tsunami?

• Earthquake under the sea.

• Rising magma inside the crust.

• Very strong winds.

• Aquaman in a bad mood.

Shown is a satellite image of the Himalayas. It lies between the Indian plate and the Eurasian plate.

How do these plates move?

• towards each other

• away from each other

• in the same direction

• sideways

Which of the following locations is the result of a convergent boundary?

• Himalayas in Northern India

• Mid-atlantic ridge in the Atlantic Ocean

• San Andreas fault in California.

• Lake Malawi in Africa

The diagram shows the formation of a mid-ocean ridge.

What causes this?

• plates moving apart

• plates moving towards each other

• plates moving in the same direction

Which results from a transform boundary? Tick two.

• faults

• earthquakes

• trench

• volcano

Shown here are two minor plates of Africa - the Nubian plate and the Somali plate. A divergent boundary (red line, center) occurs between these two plates.

What can be formed in this boundary in the future? Tick two.

• An ocean.

• A valley.

• A mountain range.

• A trench.

1 - Stress builds up

2 - Stress is released

3 - Plates lock

4 - Plates move

Which is the correct sequence for an earthquake to occur?

• 1, 2, 4, 3

• 4, 3, 1, 2

• 4, 3, 2, 1

• 3, 4, 2, 1

Shown here is the Mariana trench in the pacific ocean.

Which statement is INCORRECT about a trench?

• A trench can be found in a subduction zone.

• A trench is a deep valley at the edge of a continent.

• A trench is a result of two plates moving apart.

• A trench is a result of two plates moving towards each other.

What is shown by the diagram?

• A subduction zone forming a volcano.

• Divergent plates forming a volcano.

• A subduction zone forming a fault.

• Divergent plates forming a fault.