100 200 300 400 500 600 700 Seismic

  • Slides: 29
Download presentation
100 200 300 400 500 600 700

100 200 300 400 500 600 700

Seismic waves that travel through the interior of Earth A. Surface waves B. Rayleigh

Seismic waves that travel through the interior of Earth A. Surface waves B. Rayleigh Waves C. Love Waves D. Body Waves

Seismic waves that travel on the surface of Earth A. Surface waves B. S

Seismic waves that travel on the surface of Earth A. Surface waves B. S waves C. P waves D. Body waves

The first seismic waves to arrive A. S Waves B. P Waves C. Love

The first seismic waves to arrive A. S Waves B. P Waves C. Love Waves D. Rayleigh Waves

The second fastest seismic waves A. S Waves B. P Waves C. Love Waves

The second fastest seismic waves A. S Waves B. P Waves C. Love Waves D. Rayleigh Waves

The slowest of the seismic waves A. Body waves B. P waves C. S

The slowest of the seismic waves A. Body waves B. P waves C. S waves D. Surface waves

How do scientists find the epicenter of an earthquake? A. by comparing departure times

How do scientists find the epicenter of an earthquake? A. by comparing departure times of P waves and S waves at several seismograph stations B. by digging at several locations and comparing data c. by comparing arrival times of P waves and S waves at several seismograph stations d. by reviewing satellite photos of tsunamis

Which of the following statements about shadow zones is NOT true? A. They are

Which of the following statements about shadow zones is NOT true? A. They are locations on Earth’s surface where no body waves from a particular earthquake can be detected. B. Waves bend and change directions as they pass through Earth C. They exist because the materials that make up Earth’s interior are uniform D. A large S-wave shadow zone covers the side of Earth opposite an earthquake

Mafic Lava is A. rich in silicate materials B. light colored C. common in

Mafic Lava is A. rich in silicate materials B. light colored C. common in oceanic crust D. very viscous

Felsic Lava is A. Runny lava B. Common in continental crust C. Associated with

Felsic Lava is A. Runny lava B. Common in continental crust C. Associated with quiet eruptions D. Very viscous

Which of the following does NOT describe magma that causes explosive eruptions? a. felsic

Which of the following does NOT describe magma that causes explosive eruptions? a. felsic magma b. large amounts of trapped and dissolved gases c. rich in light-colored silicate materials d. low viscosity

Explosive volcanic eruptions commonly result from a. aa lava b. felsic magma c. mafic

Explosive volcanic eruptions commonly result from a. aa lava b. felsic magma c. mafic magma d. pahoehoe lava

Which type of volcano is made up of only pyroclastic material that results from

Which type of volcano is made up of only pyroclastic material that results from violent eruptions? a. cinder cones b. composite volcano c. shield volcano d. stratovolcano

Which aspect of mafic lava is important in the formation of smooth, ropy pahoehoe

Which aspect of mafic lava is important in the formation of smooth, ropy pahoehoe lava? a. a fairly high viscosity b. a fairly low viscosity c. rapidly deforming crust d. rapid underwater cooling

A scientist is studying a volcanic lava flow in Hawaii. The scientist finds sharp

A scientist is studying a volcanic lava flow in Hawaii. The scientist finds sharp volcanic rock in a large lava field. Which of the following statements best describes the lava that the scientist found? a. The lava is mafic lava that flowed during a quiet eruption. b. The lava is the least viscous form of mafic lava. c. The rocks are lapilli that were produced during an explosive eruption. d. The lava has a high silica content and flowed during a quiet eruption.

The magnitude of an earthquake can be expressed numerically by using a. only the

The magnitude of an earthquake can be expressed numerically by using a. only the Richter scale b. both the Mercalli scale and the moment magnitude scale c. only the Mercalli scale d. both the Richter scale and the moment magnitude scale

How is the intensity of an earthquake measured? a. by measuring the amount of

How is the intensity of an earthquake measured? a. by measuring the amount of ground motion caused by the earthquake b. by measuring the strength of the earthquake based on the size of the area of the fault that moves c. by measuring the amount of destruction caused by the earthquake d. by measuring the number of seismic waves that occur during the earthquake

Which of the following statements describes the relationship between the epicenter and focus of

Which of the following statements describes the relationship between the epicenter and focus of an earthquake? a. The focus is the point on Earth’s surface what the epicenter of an earthquake is located b. The epicenter is the point on Earth’s surface that lies directly above the focus c. The epicenter is the point where an earthquake occurs, and the focus is where seismic waves reach Earth’s surface d. The focus is deeper within the Earth than the epicenter is

What type of seismic waves are indicated by the points on the seismogram marked

What type of seismic waves are indicated by the points on the seismogram marked by letter A? a. Love waves b. Rayleigh waves c. P waves d. S waves

An earthquake with a rating of 1 means A. The lowest intensity B. The

An earthquake with a rating of 1 means A. The lowest intensity B. The highest intensity C. The lowest magnitude D. The highest magnitude

An earthquake with a rating of XII means A. The lowest intensity B. The

An earthquake with a rating of XII means A. The lowest intensity B. The highest intensity C. The lowest magnitude D. The highest magnitude

The picture shows changes in human structures after an earthquake. What process causes an

The picture shows changes in human structures after an earthquake. What process causes an earthquake and results in the offset of the structures and roads shown? a. focusing b. subduction c. surface waves d. elastic rebound

Which of the following is NOT a major volcanic area? a. central continental plains

Which of the following is NOT a major volcanic area? a. central continental plains b. mid-ocean ridges c. boundaries of tectonic plates d. subduction zones

Which of the following does NOT signal a volcanic eruption? a. a change in

Which of the following does NOT signal a volcanic eruption? a. a change in earthquake activity b. an increase in thunderstorms near the volcano c. a change in the amount and compositions of volcanic gases d. bulging of volcano surface

Island arcs form when oceanic lithosphere subducts under a. continental lithosphere b. calderas c.

Island arcs form when oceanic lithosphere subducts under a. continental lithosphere b. calderas c. volcanic bombs d. oceanic lithosphere

Magma is liquid rock that forms beneath Earth’s surface. Which of the following is

Magma is liquid rock that forms beneath Earth’s surface. Which of the following is NOT a condition under which magma may form? a. a volcanic eruption b. increased temperature c. decreased pressure d. addition of fluids

How does volcanic activity contribute to plate margins where new crust is being formed?

How does volcanic activity contribute to plate margins where new crust is being formed? a. Where plates collide at subduction zones, rock melts and form pockets of magma. b. Between plate boundaries, hot spots may form a chain of volcanic islands c. When plates pull apart at oceanic ridges, magma creates new ocean floor. d. At some boundaries, new crust is formed when one plate is forced on top of another.

The illustration shows volcanic activity. How does activity at point B contribute to volcanic

The illustration shows volcanic activity. How does activity at point B contribute to volcanic activity at Mount St. Helens and Mount Adams? a. The Juan de Fuca plate is subducting under the North American plate, producing magma. b. The Juan de Fuca plate is spreading away from the Pacific plate, producing magma. c. The volcanic activity is being caused by a hot spot in the North American plate. d. The North American plate is pushing down on the asthenosphere, producing magma.

Based on data about Hawaii, scientists estimate that the rate of plate movement for

Based on data about Hawaii, scientists estimate that the rate of plate movement for the Pacific plate is 12. 4 cm/year. If this rate remains constant, how long will it take for the plate to move 100 km? a. b. c. d. 8. 1 years 12. 4 years 1. 24 x 103 years 8. 1 x 105 years

100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 200 100 200 300 400 300 400100 200 100 200 300 400 300 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400
100 100 200 200 300 300 400 400100 100 200 200 300 300 400 400