VOLCANOES AND EARTHQUAKES

• Each dot on the map represents an Earth scientist’s data. These dots most likely represent zones of frequentA. fossil correlations.B. crustal activity.C. hurricane paths.D. meteor impacts.

Pg. 51-Title Page

• Write out the titles: Chapter 12 Earthquakes and Chapter 13 Volcanos.

• 3 pictures for EACH CHAPTER-that’s 6 total.

• 3 keywords for EACH CHAPTER-that’s 6 total.

• 3 colors

In: pg 52

Use the world earthquake map at http://earthquake.usgs.gov/earthquakes/map/ to answer the following questions.

1. On the map, what does each of the following represent?a. The dotsb. Red lines2. Have there been any earthquakes in the US in the last week?3. Where?

Thru 1: pg 53

Mapping Earthquakes and Volcanoes Activity.• Complete the map—please make

sure you have 2 colors of pen or pencil!

• Answer the questions at the bottom

Out

• The ring of fire is an area around the Pacific Ocean with a lot of earthquake and volcano activity.

1. What is the Ring of Fire?2. Why do you think there are so many earthquakes

and volcanoes in the Ring of Fire?

Thurs. 4/3 and Fri. 4/4

• Quiz #1 today-get out paper and your INB.

Quiz #1

1. What is the title of ch. 11? Pg 432. _____ is the balance between pull of gravity and the

upward push of the asthenosphere on the lithospheric plates. Pg 45

3. In tension stress, the crust is _____ ____. Pg 454. A(n)_____ is a fold in the crust that folds upwards. Pg.

455. The ______ wall is the the rock above the fault. Pg 456. In a _____fault, the hanging wall moves up. Pg. 457. The Appalachian Mountains are an example of a

mountain _______. Pg. 458. What is the answer to #6 of the IN? Pg. 489. What is the answer to #10 of the IN? Pg 4810. What was the name of the movie? Pg 49

Major earthquakes occurA. in specific belts within the crust.B. along the mantle-core boundary.C. in the centers of the continents.D. randomly over the Earth’s surface.

In: pg 54

1. What state is first for earthquake activity?

2. Out of the 50 states, where do you think Nevada ranks?

Chapter 12 Earthquakes

Thru 1: Pg. 55Cornell Notes

What are Earthquakes?

• Earthquake-sudden movement of the ground caused by the release of energy when the rocks move along a fault.– Fault-a break in rock where movement

occurs.

Where do most earthquakes occur?

• Most earthquakes occur at plate boundaries, where there is a lot of stress.

• Some happen at fault zones

Anatomy of an earthquake

• Focus-where the first movement occurs in the earth’s crust.

• Epicenter-point on the earth’s surface directly above the focus.

Seismic Waves

• Body waves-travel thru the earth’s interior.Includes:– P waves-primary• Fastest waves, first to be detected.• Move back and forth parallel to the motion of

the wave.• Move thru solids, liquids and gases.

– S waves-secondary• Second fastest• Move perpendicular to motion of wave.• Move only thru solids

• Surface waves-travel along the earth’s surface.– Slowest moving waves– Move rock side to side and up and down– Cause the most damage during earthquakes

Shadow Zones

Seismology

• Seismology is the study of earthquakes.

• Seismograph-instrument that records seismic waves.

Measuring Earthquakes

• Magnitude-strength of an earthquake.– Richter scale

• Intensity-how much damage an earthquake causes.– Mercalli

scale

Now!

• Do 3 questions and a 3 sentence summary.

Thru 2:

Pg. 563 Column Vocab1. Earthquake2. Focus3. Epicenter4. Body wave5. Surface wave6. P wave

Pg. 577. S wave8. Shadow zone9. Fault zone10. Seismograph11. Magnitude12. Intensity

Out

According to the Richter Scale, what is the1. Weakest number of

earthquake?2. Strongest number

of earthquake?3. How often do small

earthquakes happen?

4. How often do #10 earthquakes happen?

Mon. 4/7 and Tues. 4/8

• A large belt of mountain ranges and volcanoes surrounds the Pacific Ocean and is often referred to as the Ring of Fire. What events are most closely associated with these mountains and volcanoes?A. EarthquakesB. HurricanesC. TornadoesD. Blizzards

In: Pg. 58• Use the notes on Pg. 55 to answer the questions.1. Where do most earthquakes occur?2. The ______is the point in the crust where movement

occurs first.3. ______ waves can travel through the earth’s interior.4. _______ waves move perpendicular to the motion of

the wave.5. _______ waves can move through solids, liquids and

gases.6. _______ waves cause the most damage during

earthquakes.7. _______is the study of earthquakes.8. The Richter Scale measures the _______ of an

earthquake.

Thru 1: Pg. 59

Article: Disaster in Japan.• Tape in the questions and answer

them on the LINED paper

video

Thru 2

Pg. 60 Analysis Questions:Define:1. Magma2. Lava3. Pyroclastic material4. What are the 5 types

of pyroclastic material?

5. How is pyroclastic material classified?

Pg. 61Types of Volcanoes Tree Map pg. 327-328

Types of Volcanoes

Shield• Describe the Shape• Type of eruption• Picture-colored

• Mount Saint Helens Eruption• Mount Etna Eruption• Nat. Geo.

Out

• What is the difference between magma and lava?

According to the diagram.1. What is the difference between magma and lava?2. What is the “storage area” for magma called?3. What is a crater?4. What is a vent?5. What is erupted from a volcano?

Wed. 4/9 and Thurs. 4/10

• Test and INB check next class.• Study Guide due next class.

• A cone formed only by solid fragments built up around the volcano opening is a

a. Shield coneb. Cinder conec. Composite volcanod. Stratovolcano

In: Pg. 62Read the definitions and label the diagram.

Thru 1: pg. 63

13.2 Volcanic Eruptions CLOZE

Do your study guide!

Out1. What is a caldera?2. Explain how Crater Lake

formed.Crater Lake, Oregon

Fri. 4/11 and Mon. 4/14

This is a map of all the known faults in the Las Vegas Valley. The brown lines are East-dipping normal faults. The yellow line is a West-dipping normal fault, and the green lines are inactive faults.