25.4

Question 1

What is boundary that marks a density change between layers?

Answer 1

Discontinuity

Question 2

How are discontinuity identified

Answer 2

By using size mic waves

Question 3

What is a shadow zone?

Answer 3

No size mic waves have been recorded

Question 4

What is another name for shadow zone

Answer 4

dead zone

Question 5

what are the degrees that the dead zone falls threw

Answer 5

105-140

Question 6

is the outer core a solid or a liquid

Answer 6

liquid

Question 7

is the inter core a solid or a liquid and why

Answer 7

solid because of the pressure

Question 8

what makes up the lithosphere

Answer 8

the crust and the uppermost part of the mantle

Question 9

what is the asthenosphere

Answer 9

plastic like layer that Earth plates move on

Question 10

what elimits make up the mantle

Answer 10

calcium, aluminum, and magnesium

Question 11

which elements make up the core

Answer 11

iron and nickle

Question 12

The measure of a fluids resistance to flow

Answer 12

Viscosity

Question 13

A chemical compound silicon dioxide, sica, which is a common ingredient in moat magma

Answer 13

Silica

Question 14

Tend to be small, have heights in the hundreds of meters range, and have short eruption cycles

Answer 14

Cinder Cone Volcano

Question 15

Broad, flats structures composed of the layer upon layer of lava flows

Answer 15

Shields Volcanoes

Question 16

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

Answer 16

Composite Volcanoes

Question 17

What is the molded or liquid rock in the middle of the Earth called

Answer 17

magma

Question 18

Where is the ring of fire located

Answer 18

Pacific Ocean

Question 19

what form when tectonic plate collide with subduction zones

Answer 19

Volcanoes

Question 20

what two specific location have volcanic activity due to divergents

Answer 20

East African rift valley, Mid Atlantic Ridge

Question 21

Are hot spots stationary

Answer 21

yes

Question 22

what are created form hot spots

Answer 22

islands( the Hawaiian Island)

Question 23

if a viscosity is higher, is it going to flow faster or slower

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 that erupts from a volcano

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

volcano blocks and bombs

Question 28

what are the gas that come form volcanoes

Answer 28

water vapor, carbon dioxide, and sulfur dioxide

Question 29

how are volcanoes classified

Answer 29

by shape, size and material that erupts form them