8th Grade Midterm Study Guide

Front

What type of rock is heavier and dense, making up the oceanic crust of Earth?

Back

Basalt

Front

What plate boundary feature is indicated by arrows showing the movement of plates?

Back

A fault forming at an active transform boundary

Front

What are the three types of plate tectonic boundaries?

Back

Convergent boundaries, divergent boundaries, and transform boundaries

Front

What is the San Andreas fault?

Back

A transform fault that runs through California, where two tectonic plates slide past each other.

Front

How are ocean crusts moving in sea-floor spreading?

Back

Diverging

Front

What is a convergent boundary?

Back

A tectonic plate boundary where two plates collide, often forming mountains or causing subduction.

Front

What is a divergent boundary?

Back

A tectonic plate boundary where two plates move apart, often creating new crust as magma rises.

Front

What is a transform boundary?

Back

A tectonic plate boundary where two plates slide past each other horizontally, causing earthquakes.

Front

What geological feature is commonly formed at convergent boundaries?

Back

Mountains or deep ocean trenches.

Front

What is subduction?

Back

The process where one tectonic plate moves under another and sinks into the mantle.