test 2.3 review

Front

What is the oldest rock layer at Site 1?

Back

A

Front

What is an undersea mountain range called?

Back

Mid-ocean ridge

Front

Where does sea-floor spreading begin?

Back

Mid-ocean ridge

Front

What causes Earth's tectonic plates to move?

Back

Convection currents in the mantle

Front

What does relative dating of rock layers indicate about deeper layers?

Back

The older the rocks get.

Front

What is the process of new oceanic crust forming at mid-ocean ridges called?

Back

Sea-floor spreading

Front

What is the term for the movement of tectonic plates?

Back

Plate tectonics

Front

What geological feature is formed by the collision of tectonic plates?

Back

Mountain ranges

Front

What is the term for the boundary where two tectonic plates meet?

Back

Plate boundary

Front

What is the primary source of energy that drives convection currents in the mantle?

Back

Heat from the Earth's core