Earthquakes & Volcano Review

1) What do the dots on the graph represent?

VolcanoesEarthquakes

2) The dots form mostly on the same lines. What are these lines representing?

Plate Boundaries

3) What is the Ring of Fire?4) Where is the ring of fire on the above diagram?

An Arc of intensive seismic and volcanic activity surrounding the Pacific Plate.

5) What U.S. states are a part of the Ring of Fire?

AlaskaWashingtonOregonCalifornia

6) What U.S. State is in the middle of the ring of fire?

Hawaii

7) How is an earthquake produced?

With the sudden movement of the ground caused by the release of energy when the rocks

move along a fault.

8) Label the parts in the earthquake picture.

9) What is a fault?

A break in the rock where movement occurs.

10) What is the epicenter of an earthquake?

A point on the Earth’s surface where the Earthquake is first felt

11) What is the focus of the earthquake?

Where the first movement occurs in the Earth’s Crust

12) What piece of equipment can measure seismic waves?

A Seismograph

13) The area in the picture where no seismic waves occur after the earthquake is called the:

Shadow Zone

14) Label the diagrams below.

15) Identify each wave as either an S-Wave or a P-wave

A. P-waveB. S-wave

16) Speed of wave A: Speed of wave B:

Fastest 2nd Fastest

17) A Movement: B Movement:Back and Forth Perpendicular

18) A moves through: B moves through:

Solid, Liquid, Gas Solid

19) What does the Richter Scale tells about an earthquake?

Magnitude; Strength

20) What does the Mercalli scale tell us about an earthquake?

Intensity: the amount of damage that occurred

21) The damage an earthquake does is called:

Its Intensity – Mercalli Scale

22) The strength of an earthquake is called its:

Magnitude – Richter Scale

23) What is a tsunami?

A giant wave that forms after a volcanic eruption, submarine earthquake or landslide.

24) Where is magma found?

Below ground

25) Where would lava be found?

Above Ground

A. Cinder ConeB. ShieldC. Composite

26) Label the three types of volcanoes

27) Describe the slopes of each volcano.

A. In-betweenB. Gently slopingC. Steep

27) Describe the eruptions of each volcano?

A. LocalB. QuietC. Explosive

28) Crater Lake, Oregon is a _______________ that formed when the magma chamber below a volcano partially emptied and cause the ground to sink.

Caldera

Nevada is on Shaky Ground Article & Video

After watching the video, reading the article and discussing the diagrams. Do

you think the Las Vegas Valley is ready for an earthquake? Explain and support your

answer in 5-8 complete sentences.