Chapter 25.3 and 25.4

Question 1

What is the boundary that marks the density change between layers

Answer 1

Discontinuity

Question 2

How are dincontinuities identified

Answer 2

By using seismic waves

Question 3

What is a shadow zone

Answer 3

An area where no seismic waves have been recorded

Question 4

What is another term for shadow zone

Answer 4

Dead zone

Question 5

What are the degrees that shadow zones fall between

Answer 5

105 and 140 degrees

Question 6

Is the outer core a solid or a liquid

Answer 6

Liquid

Question 7

Is the inner core a solid or a liquid? Why?

Answer 7

It is a solid because the pressure

Question 8

What makes up the lithosphere

Answer 8

The crust and uppermost mantle

Question 9

What is the asthenosphere

Answer 9

Plastic-like layer where plates move on

Question 10

What elements make up the mantle

Answer 10

Calcium, Aluminum, Iron, and Magnesium

Question 11

What elements make up the core

Answer 11

Iron and Nickel

Question 12

the measure of a fluids resistance to flow

Answer 12

Viscosity

Question 13

the chemical compound silicon dioxide which is a common ingredient in most magma

Answer 13

Silica

Question 14

small, have heights in the hundred of meters range and have short eruption cycles

Answer 14

Cinder Cone Volcanoes

Question 15

broad flat structures composed of layer upon layer of lava flows

Answer 15

Shield Volcanoes

Question 16

large steep-sided, often thousands of meters high and tens of kilometers across the base, and composed of layers of both lava and ash

Answer 16

Composite Volcanoes

Question 17

What is molten or liquid rock stored inside the Earth?

Answer 17

magma

Question 18

Where is the ring of fire located?

Answer 18

Pacific Ocean

Question 19

What forms when tectonic plated collide along subduction zones?

Answer 19

Volcanoes

Question 20

What two specific locations have volcanic activity due to divergence

Answer 20

East African Rift Valley and the Mid-Atlantic ridge.

Question 21

Are hot spots stationary

Answer 21

Yes

Question 22

What are created form hot spots

Answer 22

islands (Hawaiin Islands)

Question 23

If a viscosity is higher is it going to flow slower or faster.

Answer 23

Slower

Question 24

If magma has a high viscosity is it going to have more or less silica

Answer 24

More silica

Question 25

What is pyroclastic material

Answer 25

any solid material the erupts from a volcanoe

Question 26

What is the smallest type of pyroclastic material

Answer 26

Ash

Question 27

What is the biggest type of pyroclastic material

Answer 27

blocks and bombs

Question 28

What are the gases that come from volcanoes

Answer 28

Water vapor, carbon dioxide, sulfur dioxide

Question 29

How are volcanoes classified

Answer 29

based of their size, shape, and material that erupts from them

Question 30

What are the three types of volcanoes

Answer 30

Composite, Shield, Cinder Cone