volcanos

Question 1

Active Volcano
Where do most volcanoes occur?

Answer 1

• actively erupting i
• is expected to erupt again
• plate boundaries or the ring fire

Question 2

Where do most volcanoes occur?:

Answer 2

plate boundaries or the ring fire

Question 3

Caldera

Answer 3

A large volcanic depression forms when a volcano summit collapses or is blown away by explosive activity

Question 4

Cinder cone volcano

Answer 4

• a small steep-sided volcano
• erupts gas-rich basaltic lava

Question 5

Composite volcano

Where are these volcanoes commonly found?

Answer 5

• a large steep-sided volcano
• results from explosive eruptions of andesitic and rhyolitic lavas along convergent plate boundaries

Where are these volcanoes commonly found? above subductions zones

Question 6

circumference:

Answer 6

the distance around a circle

Question 7

country rock:

Answer 7

rock native to an area

Question 8

Dormant volcano

Answer 8

an inactive volcano

Question 9

Eruption

Answer 9

when magma sevafaces

Question 10

What factors affect the eruption style of a volcano?

Answer 10

Magma chemistry affects the volcano’s eruption style as well as the amount of dissolved gasses, specifically the amount of water vapor, and how much silica is in the magma.

Question 11

Hot spot

Answer 11

volcanos that are not associated with plate boundaries.

Question 12

hardness

Answer 12

: a measure of the relative resistance to scratching of an object

Question 13

Lava

Answer 13

molten rock that erupts onto the earth’s surface

Question 14

Magma

Answer 14

molten rock beneath the earth’s surface

Question 15

mass:

Answer 15

a measure of the amount of matter in an object

Question 16

Plume

Answer 16

Placed where hot magma rises due to convection currents in the magma

Question 17

Pyroclastic Flow

Answer 17

fast-moving avalanches made of hot gas, ash, and rock

Question 18

qualitative:

Answer 18

data representing information and concepts that are not expressed as numbers

Question 19

quantitative:

Answer 19

data that measures values or counts and is expressed as numbers

Question 20

Ring of Fire

Answer 20

represents an area of volcanic and earthquake activity that surrounds the Pacific Ocean

Pacific Ocean. For example, Hawaii, the Galapagos Islands, and Yellowstone National Park are in this area.

Question 21

Shield volcano

Where are these volcanoes commonly found?

Answer 21

large with gentle slopes made from the basaltic lavas.

found along divergent plate boundaries and oceanic hot spots.

Question 22

USGS

What do USGS scientists monitor?

Answer 22

The United States Geological serve

Potential for future volcanic activity in the United States

Question 23

Viscosity

How does the viscosity of magma/lava affect the explosiveness of a volcano?:

Answer 23

is a liquid resistance to flow

magma that has a low silica content flows easy like warm maple syrup this is because it has a low viscosity. Magna with a high silica content has a high viscosity and flows like sticky toothpaste.

Question 24

Volcanic ash

Answer 24

TIniy particles of pulverized vocanic rock and glass.

Question 25

Volcano

were do they form

Answer 25

: a vent in the earth’s crust through which melted or molten rock flows

at a divergent plate boundary, a hot spot convergent boundaries

Question 26

How do geologists classify volcanoes?

Answer 26

by shape and sizes, they monitor volcanic activity with
Earthquaie activity
Change in shape if colano
Gas permissions
Past eruptive history

Question 27

List the three main types of volcanoes.

Answer 27

Shield volcanoes, composite volcanoes, cinder cones

Question 28

What determines the shape of a volcano?

Answer 28

Maga copistiton
eruption style

Question 29

List 5 volcanic hazards.

Answer 29

Lava flows
Ash fall
Mudflows
Pyroclastic flows
Climate change

Question 30

How many volcanos erupt in a day

Answer 30

20