Earthquakes

Front

What is the instrument used to measure earthquakes?

Back

Seismograph

Front

Which layer of the Earth do tectonic plates move on?

Back

Asthenosphere

Front

What does the word 'alter' mean?

Back

changed

Front

What is the scale used to measure the strengths of earthquakes?

Back

Richter scale

Front

Scientists who study earthquakes are called?

Back

Seismologists

Front

What are tectonic plates?

Back

Large pieces of the Earth's crust that move and interact with each other.

Front

What causes earthquakes?

Back

The movement of tectonic plates along faults.

Front

What is a fault?

Back

A crack in the Earth's crust where blocks of land have moved.

Front

What is the focus of an earthquake?

Back

The point inside the Earth where the earthquake starts.

Front

What is the epicenter of an earthquake?

Back

The point on the Earth's surface directly above the focus.