Earthquakes

This is the area beneath the Earth's surface where the earthquake begins

• epicenter
• focus
• fault line
• tectonic plate

Tags

NGSS.MS-ESS3-2

These are the first waves released during an earthquake

• S waves
• Surface Waves
• P waves

You use a travel-time graph (difference in P and S Wave arrival times) to find:

• Distance to epicenter
• Distance to fault
• Distance to core

Tags

NGSS.MS-PS4-2

Earthquakes happen every day. Most are too small for humans to notice.

• True
• False

Tags

NGSS.MS-ESS3-2

At about what time did all of the S-waves hit?

• 20 sec
• 45 sec
• 50 sec
• 10 seconds

Tags

NGSS.MS-ESS3-2

NGSS.MS-PS4-2

The motion caused by earthquakes travels outward from the focus in the form of

• Electromagnetic waves
• Seismic waves
• Gravity waves
• Chemical energy

A break in the lithosphere along which movement has occurred is a(n)

• fault
• earthquake
• epicenter
• volcano

Which kind of waves can NOT travel through a liquid?

• P waves
• S waves
• Radio Waves
• X rays

Tags

NGSS.MS-PS4-2

Which kind of wave arrives at seismic stations second?

• P (primary)
• S (secondary)
• L (love)
• R (rayleigh)

The focus of an earthquake is

• The point (below Earth's surface) where rock breaks
• The closest seismic station
• The place where the greatest damage occurs
• A fault