Unit 2B: The Dynamic Earth Study Guide

Front

What is the age of ocean crust near ridges compared to ocean crust near trenches?

Back

Younger.

Front

What geological process is responsible for forming deep-sea trenches?

Back

Subduction.

Front

What force causes material in a landslide to move down a slope?

Back

Gravity.

Front

What type of plate boundary creates mid-ocean ridges?

Back

Divergent boundary.

Front

How many earthquakes happen each year globally?

Back

More than 1,000,000.

Front

Define 'subduction'.

Back

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

Front

What is a divergent boundary?

Back

A tectonic plate boundary where two plates move away from each other, creating new crust.

Front

What is the role of gravity in geological processes?

Back

Gravity pulls materials down slopes, contributing to landslides and erosion.

Front

Explain the concept of tectonic plates.

Back

Large sections of the Earth's lithosphere that move and interact at their boundaries.

Front

What is a transform boundary?

Back

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