Chapter 2 (8th)

row 1

1

The fastest type of earthquake waves are S waves.

P (Primary)

2

The earthquake zone stretching from southern europe to Indonesia is the __?

Alpide belt

Circum-pacific belt

Middle eastern belt

Indian ocean belt

alpide belt

3

The study of earthquakes is called _____________?

seismology

4

What is the idea that rocks on either side of a fault spring to position of little or no stress after the earthquake?

elastic rebound

5

Solid particles less than 2mm in diameter.

volcanic ash 

row 2

1

1. About 80% of the world's earthquakes occur in the __?
   Indian ocean
   Circum pacific belt
   Alpide belt
   Middle eastern belt

circum-pacific belt

2

1. What is the area between the upper mantle and the lower mantle?

   1. Litho

   2. Moho 

   3. Transition zone

   4. Gutenburg discontinuity 

transition zone

3

What is the fracture zone between stationary and moving rocks called?

fault

4

Hardened lava with a surface that is either smooth or ropy.

Pahoehoe

5

A volcanologist is placing instruments near a volcano to help predict when the volcano will erupt. Which of the following instruments is he most likely to choose?

A seismometer; to detect earthquakes caused by underground pressure

Camera; to detect molten rock and volcanic ash released by the volcano

Light meter; to detect the sun being blocked by volcanic ash 

Thermometer; to detect steam and hot gasses released by the volcano 

A seismometer; to detect earthquakes caused by underground pressure

row 3

1

Eighty-Five percent of all earthquakes are ___ earthquakes? 

intermediate - focus
Deep-focus
No-focus
Shallow-focus

shallow- focus

2

Smaller earthquakes that often follow a large earthquake at frequent intervals are called.

aftershocks

3

Formed partly by explosive eruptions of ash and rock fragments and partly by mild lava flows.

composite volcano

4

The underground Lava Tunnel is the actual source of volcanic eruption

magma chamber

5

An instrument used to record the vibrations caused by an earthquake is a(n) ___________?

seismograph

row 4

1

What is the bottom of the mantle called?

core-mantle boundary

2

What is the boundary line between the crust and the mantle?

moho

3

Consists primarily of erupted volcanic ash and rock fragments help loosely together

cinder-cone volcano

4

What type of fold occurs when rocks buckle up to form an arch-like structure?

1. Anticline

2. Procline

3. Syncline

4. Concline

Anticline

5

Lava in water solidifies almost instantly, forming rounded structures

pillow lava

row 5

1

the study of the earth  is __________?

geology

2

Large, irregularly shaped lump made of lava that hardens before being thrown out of the volcano.

volcanic block

3

Volcano that probably will not erupt again.

extinct

4

The type of mountain that forms when molten rock erupts from a hole inside the earth's crusts is a(n) __________ mountain?

volcanic 

5

How does the existence of the RIng of Fire provide evidence for plate tectonics?

Most volcanoes occur where molten rock reaches the surface

Moar volcanoes produce lava when they erupt

Most volcanoes appear to be located along subduction zones

Most volcanoes occur in the same regions of the world

Most volcanoes appear to be located along subduction zones