Earthquakes

Front

What is the minimum number of seismographic stations needed to determine the distance and direction to an earthquake's epicenter?

Back

3 seismographic stations are needed to triangulate the epicenter of an earthquake.

Front

What are the first waves to arrive during an earthquake?

Back

P waves (Primary waves) are the first seismic waves to arrive.

Front

What are the second waves to arrive that cause earthquakes?

Back

S waves (Secondary waves) are the second type of seismic waves to arrive.

Tags

NGSS.MS-PS4-2

Front

Which type of seismic wave is the most destructive and travels along the surface?

Back

Surface waves are the most destructive seismic waves and travel along the Earth's surface.

Tags

NGSS.MS-ESS3-2

Front

What is the thinnest layer of the Earth?

Back

The crust is the thinnest layer of the Earth.

Front

What is the primary purpose of a seismograph?

Back

A seismograph is used to detect and record the vibrations caused by seismic waves during an earthquake.

Tags

NGSS.MS-ESS3-2

Front

What is the difference between P waves and S waves?

Back

P waves are compressional waves that can travel through solids and liquids, while S waves are shear waves that can only travel through solids.

Front

What is an epicenter?

Back

The epicenter is the point on the Earth's surface directly above the focus of an earthquake.

Tags

NGSS.MS-ESS3-2

Front

What is the focus of an earthquake?

Back

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

Tags

NGSS.MS-ESS3-2

Front

What are tectonic plates?

Back

Tectonic plates are large sections of the Earth's lithosphere that move and interact at their boundaries, causing earthquakes.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3