ES Semester 1 Review

Front

What is needed to determine the epicenter of an earthquake?

Back

At least 3 seismograph locations are needed.

Front

What is the shadow zone in seismology?

Back

The shadow zone is an area where no P or S waves are detected on a seismograph.

Front

How do you calculate total relief in elevation?

Back

Total relief is calculated by finding the difference in elevation between the highest and lowest points.

Front

What is an index contour line?

Back

An index contour line is the line that is labelled on a topographic map.

Front

What drives plate tectonics?

Back

Convection cells are the driving force behind plate tectonics.

Front

What is the focus of an earthquake?

Back

The focus is the point within the Earth where an earthquake originates.

Front

What are P waves?

Back

P waves, or primary waves, are seismic waves that compress and expand the ground.

Front

What are S waves?

Back

S waves, or secondary waves, are seismic waves that move the ground up and down or side to side.

Front

What is the difference between magnitude and intensity of an earthquake?

Back

Magnitude measures the energy released at the source, while intensity measures the effects of the earthquake at different locations.

Front

What is a seismograph?

Back

A seismograph is an instrument that detects and records the vibrations caused by seismic waves.