Unit 1 Review Heat in the Earth System

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 process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is known as _______

• convection.

• continental drift.

• subduction.

• conduction.

Most geologists think that the movement of Earth’s plates is caused by _______

• convection.

• continental drift.

• subduction.

• conduction.

Scientists think that convection currents flow in Earth’s

• continents.

• mantle.

• lithosphere.

• inner core.

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 San Andreas Fault in California is known as an active earthquake area. What type of boundary is it?

• Convergent

• Divergent

• Transform

• Sea Floor Spreading

Where would the oldest rock be found?

• L
• M
• N
• O

A place where two plates move toward each other is known as a _______

• transform boundary.

• divergent boundary.

• convergent boundary.

• rift valley.

You an feel the sun's rays on your face as you lay by the beach on a warm summer day.  Which type of heat transfer is this an example of?

• Conduction
• Convection
• Radiation
• Radioactive