Grade 7 Earthquake Risks

Front

What instrument is used to record seismic waves?

Back

Seismograph

Front

True or False? Geologists need data from two or more seismographs to locate the epicenter of an earthquake.

Back

False, they need data from three seismographs.

Front

What records ground movements caused by seismic waves as they move through Earth?

Back

Seismograph

Front

True or False? The larger the force applied to a fault, the smaller the chance of a large earthquake.

Back

False

Front

True or False? The forces that move tectonic plates also move rocks along the fault.

Back

True

Front

What are seismic waves?

Back

Waves of energy that travel through the Earth, caused by earthquakes or other geological activity.

Front

What is the epicenter of an earthquake?

Back

The point on the Earth's surface directly above where the earthquake originates.

Front

What are tectonic plates?

Back

Massive slabs of Earth's lithosphere that move and interact at their boundaries, causing earthquakes.

Front

What is a fault in geology?

Back

A fracture or zone of fractures between two blocks of rock, which can cause earthquakes.

Front

What is the Richter scale?

Back

A scale used to measure the magnitude of an earthquake based on seismic wave amplitude.