Ch. 6/7 Volcanoes and Earthquakes

Faults and Stresses

100

What type of rock stress would stretch the crust making it thinner?

Tension

200

Name this fault

Strike-Slip

300

Name this fault

Normal

400

Name this fault

Reverse

500

What type of fault is the San Andreas?  This type can also change the course of rivers.

Strike-slip

Lava

100

What common crust material makes up 50-70% of lava?

Silica

200

Name this lava type.

Aa

300

Viscosity is how easily a liquid flows.  Which has a higher viscosity.....

High-silica lava     OR    Low-silica lava

High-silica

400

What type of lava is this?

Pahoehoe

500

What name is give to the following volcanoes

1.  Will not erupt again

2.  "sleeping" but may erupt in the future

3.  Currently erupting or will erupt soon

1.  Extinct

2.  Dormant

3.  Active

Earthquakes

100

This is the point underground where the crust breaks triggering an earthquake

focus

200

What term is used to describe the amount of energy released by an earthquake?

Magnitude

300

What are scientists trying to locate in this picture?

Epicenter

400

Place the following waves in the order that they occur after an earthquake.

S WAVES            SURFACE WAVES      P WAVES

P,  S,  Surface

500

1. How much more energy is released in a magnitude 3 earthquake compared to a magnitude 4

2.  What highest number in the volcano VEI scale?

1. 32x more

2.  8

Volcanoes

100

A fountain of steam and water that erupts from the ground because of volcanic activity

Geyser

200

Hawaii and Yellowstone park are volcanic areas that occur away from plate boundaries.  Name this special type of volcano

Hot Spot

300

What type of plate boundary is not expected to produce volcanoes?

DIVERGING        TRANSFORM        CONVERGING      

Transform

400

An explosive volcanic eruption can produce hot clouds of gas, ash, and rock can travel quickly.  Name this event.

Pyroclastic Flow

500

Label the picture correctly.

a.  pipe

b. crater

c.  vent

d.  magma chamber

Mix Up

100

These destructive waves can be caused by earthquakes on the ocean floor.

Tsunami

200

This rock stress squeezes rock until if folds or breaks

compression

300

What device is used by scientists to record the energy released by an earthquake?

Seismograph

400

What earthquake scale to scientist use more commonly today.

1.  Mercalli

2.  Richter

3.  Moment Magnitude

3. Moment Magnitude

500

PAHOEHOE or AA

1.  Which type is hotter?

2.  Which type has a higher viscosity?

1.  pahoehoe

2.  aa