Ch. 25.3 & 25.4

Question 1

What is the boundary that marks density change between layers?

Answer 1

discontinuity

Question 2

How are discontinuites identified?

Answer 2

Seismic Waves

Question 3

What are shadow zones?

Answer 3

Areas where seismic waves aren’t recorded

Question 4

What is another term or name for shadow zone?

Answer 4

Dead Zone

Question 5

Between which degrees range do shadow zones fall?

Answer 5

105 - 140 degrees

Question 6

Is the outer core a liquid or a solid?

Answer 6

Liquid

Question 7

Is the inner core a liquid or a solid?

Answer 7

Solid because of the pressure

Question 8

What makes up the lithosphere?

Answer 8

Crust and uppermost mantle

Question 9

What is the asthenosphere

Answer 9

Plastic-like layer which Earth’s plates move on.

Question 10

Which elements make up the mantle?

Answer 10

Calcium, Aluminum, Iron, and Magnesium

Question 11

What elements make up the core?

Answer 11

Iron and Nickle

Question 12

The measure of a fluid’s resistance to flow.

Answer 12

Viscosity

Question 13

Chemical compound silicon dioxide which is common ingredient in magma.

Answer 13

Silica

Question 14

Small volcano with hundreds of meters of height in range, and have short eruption cycles.

Answer 14

Cinder cone volcanoes

Question 15

Large and steep volcanoes, often thousands of meters high and tens of kilometers across the base, composed of layers of lava and ash.

Answer 15

Composite Volcanoes

Question 16

Broad flat structures composed of layer upon layer of lava flows

Answer 16

Shield volcano

Question 17

What is molten, or liquid rock, stored inside Earth called?

Answer 17

Magma

Question 18

Where is the ring of fire located?

Answer 18

Along the Pacific Ocean shoreline

Question 19

Which two specific locations have volcanic activity due to divergents.

Answer 19

Mid-Atlantic Ridge and East African Rift

Question 20

Are hot spots stationary?

Answer 20

Yes

Question 21

What can hot spots create?

Answer 21

Islands (Hawaii islands)

Question 22

What are the gases that come from a volcano?

Answer 22

Water vapor, carbon dioxide, and sulfur dioxide.

Question 23

How are volcanoes classified?

Answer 23

Size, shape, and the materials that erupt.