physical science chapter 25.3 & 25.4

Question 1

What is the boundary that marks a density change between layers?

Answer 1

Discontinuity

Question 2

How are discontinuities identified?

Answer 2

By using seismic waves

Question 3

What is a shadow zone?

Answer 3

Where no seismic waves have been recorded

Question 4

What is a term for the shadow zone?

Answer 4

Dead zone

Question 5

What are the degrees that the shadow zone can fall between?

Answer 5

105 and 140 degrees

Question 6

Is the outer core a solid or liquid?

Answer 6

Liquid

Question 7

Is the inner core a solid or liquid? And why?

Answer 7

Solid because the pressure

Question 8

What makes up the lithosphere?

Answer 8

The crust and upper most mantle

Question 9

What is the asthenosphere?

Answer 9

Plastic like layer

Question 10

What elements make up the mantle?

Answer 10

Calcium, Aluminium, Iron and Magnesium

Question 11

Which elements make up the core?

Answer 11

Iron and Nickel

Question 12

What is molten or liquid rock stored inside earth?

Answer 12

Magma

Question 13

Where is the ring of fire located?

Answer 13

Pacific Ocean

Question 14

What forms when tectonic plates collide along subduction zones?

Answer 14

Volcanoes

Question 15

What two specific locations have volcanic activity due to divergence?

Answer 15

Mid Atlantic Ridge

East African Rift Valley

Question 16

Are hot spots stationary?

Answer 16

Yes

Question 17

What are created from hot spots

Answer 17

Islands are created (Hawaiian Islands)

Question 18

Viscosity

Answer 18

Is a measure of a fluid´s such as lava

Question 19

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

Answer 19

Slower

Question 20

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

Answer 20

More silica

Question 21

What is Pyroclastic Material?

Answer 21

Solid material that erupts from a volcano

Question 22

What is the smallest type of Pyroclastic Material?

Answer 22

Ash

Question 23

What is the biggest type of Pyroclastic Material?

Answer 23

Blocks and bombs

Question 24

What are the gases that come from volcanoes?

Answer 24

Water Vapor
Carbon Dioxide
Sulfur Dioxide

Question 25

How are volcanoes classified?

Answer 25

Based off their side, shape, materials that erupt from them

Question 26

Cinder Cone

Answer 26

Small, have heights in the hundreds of meters range and have short eruption cycles

Question 27

Shield Volcanoes

Answer 27

Broad, flat structures composed of layer upon layer of lava flows

Question 28

Composite Volcanoes

Answer 28

Volcanoes formed from alternating explosive events that produce pyroclastic material

Question 29

What are the three types of Volcanoes

Answer 29

Cinder Cone Shield Composite