CH 25

Question 1

what is the boundary that marks the destinty change

Answer 1

discontinuity

Question 2

how can discontinuity be identify

Answer 2

sasmic waves

Question 3

what are shadow zones?

Answer 3

areas where no seimic waves are reported

Question 4

whats another name for shadow zone?

Answer 4

dead zone

Question 5

between which two degrees do shadow zones fall

Answer 5

between 105-140 degrees

Question 6

is the outer core a solid or liquid?

Answer 6

its a liquid

Question 7

is the inner core a solid or liquid? why?

Answer 7

solid because of the pressure

Question 8

what makes up a lithosphere

Answer 8

the crust and the uppermost mantle

Question 9

what is asthenosphere

Answer 9

plastic-like layer which earths plates move on

Question 10

which elements make up the mentle

Answer 10

calcium,aluminum, iron and magnesium.

Question 11

which 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

the chemical compound silicon dioxide

Answer 13

Silica

Question 14

are large and steep-sided

Answer 14

composite volcanoes

Question 15

tend to be small,heights in the hundreds of meter range, and has short eruption cycles

Answer 15

Cinder cone valcanoes

Question 16

are broad,flat structures composed of layer upon layer of lava flows

Answer 16

Shield Volcanoes

Question 17

what is molten or liquid rocks store insideearth?

Answer 17

magma

Question 18

where is the ring of fire located?

Answer 18

Pacific ocean

Question 19

what is created when tectonic plates collide along the subduction zone

Answer 19

valcanoes

Question 20

what are two specific examples of volcanic activity due to divergents

Answer 20

• mid Atlantic ridge

- east African rift

Question 21

are hot spots stationary?

Answer 21

yes

Question 22

what can be created from hot spots

Answer 22

islands (Hawaiian islands)

Question 23

if a liquid has a higher viscosity, will if flow more quickly or more slowly

Answer 23

more slowly

Question 24

if magma have high viscosity, will it contain more or less silica

Answer 24

more silica

Question 25

what is pyroclastic material

Answer 25

any solid material that erupts a valcanoe

Question 26

what are the largest of pyroclastic material

Answer 26

blocks and bombs

Question 27

whats are the smallest types of pyroclastic material

Answer 27

volcanic ash

Question 28

what are the types of gases that erupt from valcanoes

Answer 28

-water vapor
carbon dioxide
sulfur dioxide

Question 29

how are volcanoes are classify

Answer 29

size,shape, materials that erupt

Question 30

what are the three types of volcanoes

Answer 30

shield,composite, cinder cone volcanoes