Plate Tectonics

A plate boundary at which two plate move parallel to each other in opposite directions

• convergent plate boundary
• divergent plate boundary
• transform plate boundary
• subduction

one tectonic plate moves under another

• convergent plate boundary
• divergent plate boundary
• transform plate boundary
• subduction

a boundary at which two plates move away from each other

• convergent plate boundary
• divergent plate boundary
• transform plate boundary
• subduction

Which of the following causes Earth's tectonic plates to move?

• Energy from the Sun
• Magnetic Pole Reversal
• Convection currents in the mantle
• Faults in Mountain Ranges

What is the correct order (starting from the surface) of Earth’s layers?

• crust, outer core, inner core, mantle

• mantle, outer core, inner core, crust

• crust, mantle, outer core, inner core

• outer core, inner core, crust, mantle

In sea-floor spreading, molten material rises from the mantle and erupts

• along the edges of all the continents.

• along mid-ocean ridges.

• in deep-ocean trenches.

• at the north and south poles.

The geological theory of _______ states that pieces of Earth’s lithosphere are in constant, slow motion.

• subduction

• plate tectonics

• deep-ocean trenches

• sea-floor spreading

A place where two plates slip past each other, moving in opposite directions, is known as a _______

• transform boundary

• divergent boundary.

• convergent boundary.

• rift valley.

The place where two plates come together is known as a _______

• transform boundary.

• divergent boundary.

• convergent boundary.

• rift valley.

Below is a picture of sea-floor spreading. How are the ocean crusts moving?

• Converging

• Diverging

• Sliding

• No movement