chapter 25.3 and 25.4

Question 1

what is the boundary that marks the density change between layers is

Question 2

study sismic waves

Question 3

shadow zones

Answer 3

what are shadow zones

Question 4

what is the

Question 5

between what degree do shadow zone fail

Answer 5

105 to 140 d agrees

Question 6

is the outer core solid or liquid

Answer 6

liquid

Question 7

why is the outer core liquid

Answer 7

pressure

Question 8

what makes up lithosphere

Answer 8

the crust

Question 9

what is asthenosphere

Answer 9

a plastic like layer whritch earth plates move

Question 10

molten, or liquid, rocks stored inside

Question 11

where tectonic plates collide along subduction zones

Question 12

what are two types of examples of volcanic activities divergent?111

Answer 12

mid Atlantic ridge

east African ridge

Question 13

what is magma?

Answer 13

molten or liquid rock storeal inside earth

Question 14

what can be mode from hot spot?

Answer 14

islands

Question 15

where is the ring of fire?

Answer 15

pacific ocean

Question 16

viscosity:

Answer 16

is measure of a fluids such as lava resistance to flow

higher viscosity runs slower lower viscosity runs fast

Question 17

if magma has high viscosity will it contain more silica?

Answer 17

more

Question 18

what is pyroelastie material?

Answer 18

any solid material that erupts from volcano

Question 19

what is the smallest type of pyrolastic material?

Answer 19

bloks + bombs

Question 20

what are types of gases that erupt from a volcanic?

Answer 20

carbon dioxide, sulfer dioxide

Question 21

how are volcano classified

Answer 21

size shape and material that erupt

Question 22

what are 3 types of volcanoes?

Answer 22

The volcanoes.
Shield volcanoes.
Cinder cones.

Question 23

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

cinder cone volcanoes tend to be small have heights in the hundreds of meters range, and have short eruption cycles.

Answer 23

cinder cone volcanoes
shield

composite