Earthquakes, Part 2: Earthquakes and Seismic Waves

When an earthquake begins which type of seismic wave is the 1st waves to arrive?

• surface waves

• P waves

• S waves

• they all arrive at the same time

What factor of an earthquake tells geologists how much energy was released by it?

• how long its last

• its focus

• its epicenter

• its magnitude

How many different seismographic stations will geologists use to determine the epicenter of an earthquake

• 1

• 2

• 3

• 4

How many earthquakes are there everyday in the world

• only one or two

• several hundred

• several thousand

• they rarely happen

Some P waves and S waves become this when they reach the surface

• quiet

• tidal waves

• surface waves

• electromagnetic waves

Which scale do geologists often use to rate earthquakes?

• moment magnitude scale

• Richter scale

• Mercalli scale

Plate movements produce stress in Earth's crust, which adds what to rocks and forms forms faults?

• focus

• mass

• inertia

• energy

What are vibrations that travel through Earth while carrying energy released during an earthquake

• tidal waves

• seismic waves

• electromagnetic waves

• ocean waves

Tags

NGSS.MS-ESS3-2

NGSS.MS-PS3-5

Most earthquakes begin in this part of the Earth

• it atmosphere

• its geosphere

• its lithosphere

• its stratosphere

Tags

NGSS.MS-ESS3-2

Seismic waves are measured by what?

• polygraph

• wavograph

• seisimograph

• telegraph

Tags

NGSS.MS-PS4-2