Understanding Tectonic Plates and Volcanic Activity

What happens when two oceanic plates of similar density collide?

• Both plates rise to form mountains.

• The plates remain stationary.

• The denser plate is forced under the other.

• The plates move apart.

What causes magma to rise through the Earth's crust?

• The pressure from tectonic plates.

• The presence of water in the crust.

• Its density and buoyancy.

• Its high temperature.

What is a composite volcano?

• A volcano formed by the accumulation of lava and ash.

• A volcano that erupts only once.

• A volcano made entirely of lava.

• A volcano that forms underwater.

Why does lava from composite volcanoes not travel far?

• It is too hot.

• It is blocked by surrounding terrain.

• It is too thick due to its silicate content.

• It cools down quickly.

How does volcanic activity affect the terrain near subduction zones?

• It causes the terrain to sink.

• It creates varying terrain.

• It has no effect on the terrain.

• It makes the terrain completely flat.