Forces of Change Review

Which of the following is Earth's surface layer?

• core

• crust

• mantle

• plate

The Theory of Continental Drift says

• Earth's surface is made up of moving plates

• Earth's continents are moving

• ocean water around the continents is drifting

• the continents are worn down by erosion

Which of the following is true about Earth's plates?

• They rise and fall within the mantle

• They are made of soft rocks that flow like liquid

• They are pieces of rock that never move

• They are pieces of rock that constantly move.

Mountains form at what type of plate boundary?

• divergent

• convergent

• subduction zones

• transform

Volcanoes form at what type of plate boundary?

• divergent

• convergent

• convergent/subduction

• transform

Ridges and rift valleys form at what type of plate boundary?

• divergent

• convergent

• subduction zones

• transform

Boundaries where plates slide past each other are

• divergent boundaries

• convergent boundaries

• subduction zones

• transform boundaries

Which layer of the earth has convection currents?

• crust

• mantle

• outer core

• inner core

The hottest and densest layer of earth is

• inner core

• outer core

• mantle

• crust

As plates push together, one plate is forces under the other. As the bottom plate starts to melt, magma rises and forms volcanoes at the surface.

• Divergent

• Subduction

• Collision

• Transform