Plate Tectonics

The second layer of the Earth is

• crust

• inner core

• outer core

• mantle

In this process new oceanic crust is created as older materials are pushed away

• Transform Boundary

• Subduction Zone

• Sea-Floor Spreading

• Convergent

Convection is

• the movement of fluid by heat

• microwave energy

• when one plate sinks down beneath the other

• transfer of heat

When two plates move apart and lava comes up through the gap

• volcanic erutption

• sea floor spreading

• subduction

• convergent boundary

An instrument used to map the ocean floor

• radar

• compass

• sonar

• submarine

The kind of valley where plates move apart

• deep

• canyon

• rift

• trench

Earth's hard rocky layer is called the

• biosphere

• hydrosphere

• lithosphere

• atmosphere

The large landmasses that make up most of the Earth's surface are called

• islands

• deltas

• plateaus

• continents

In the convection current of a pan of soup, the cooler, denser fluid

• rises to the top

• stays where it is

• sinks to the bottom

• stays on the top

The transfer of energy through space is called

• subduction

• radiation

• conduction

• convection