Volcanoes

Question 1

is a gap in the earth where molten rock and other materials come to the earth’s surface.

Answer 1

Volcano

Question 2

is molten rock that occurs by partial melting of the crust and the mantle by high temperatures deep down in the ground.

Answer 2

Magma

Question 3

a type of volcano which is likely to erupt at any moment.

Answer 3

Active Volcano

Question 4

a type of volcano which lies dormant for centuries, but then erupts suddenly and violently.

Answer 4

Dormant Volcano

Question 5

a type of volcano that hasn’t erupted in a very long, long time so it probably won’t ever again.

Answer 5

Extinct

Question 6

a principle type of volcano that is shaped like a bowl or shield in the middle with long gentle slopes made by the lava flows.

Answer 6

Shield Volcano

Question 7

a principle type of volcano that is conical built up by many layers (strata) of hardened lava, tephra, pumice, and volcanic ash.

Answer 7

Composite Volcano

Question 8

a principle type of volcano that is circular or oval cones built from erupting lava that breaks into small pieces as it shoots into the air. As small pieces fall back to the ground, the cool and form cinders around the vent.

Answer 8

Cinder Cones

Question 9

a principle type of volcano that is formed when erupting lava is too thick to flow and makes a steep-sided mound as the lava piles up near the volcanic vent.

Answer 9

Lava Domes

Question 10

principle type of volcano that are cracks on the earth surface from where the magma can come out.

Answer 10

Fissure

Question 11

is a small cone-shaped volcano formed by an accumulation of volcanic debris.

Answer 11

Parasitic Cone

Question 12

is a flat pience of rock formed when magma hardens in a crack in a volcano.

Answer 12

Sill

Question 13

is an opening in earth’s surface through which volcanic materials escape.

Answer 13

Vent

Question 14

is the side of the volcano.

Answer 14

Flank

Question 15

is the molten rock that erupts from a volcano that solidifies as it cools.

Answer 15

Lava

Question 16

is the mouth of a volcano taht surrounds a volcanic vent.

Answer 16

Crater

Question 17

is an underground passage magma travels through.

Answer 17

Conduit

Question 18

the ash emitted by the volcano.

Answer 18

pyroclastic Materials

Question 19

is the entrance of the volcano. The part of the conduit that ejects lava and volcanic ash.

Answer 19

Throat

Question 20

is fragments of lava or rock smaller than 2 mm in size that are balsted into the air by volcanic explosions.

Answer 20

Ash

Question 21

is a cloud if ash formed by volcanic explosions.

Answer 21

Ash Cloud

Question 22

if the crater exceeds 1 km, it is called “____”. A type of volcano formed by the collapsed of the volcano.

Answer 22

Caldera

Question 23

a type of explosion that releases fluid lava rich in basalt with only a small amount of silica.

Answer 23

Quiet Explosion

Question 24

a type of explosion that releases in silica and pyroclastic materials.

Answer 24

Explosive Explosion

Question 25

(product of eruption)

poisonous gases such as carbon monoxide, sulfur gases, and hyrdochloric acid.

Answer 25

Gasses and Vapor

Question 26

(product of eruption)

fragment materials in fire. It refers to solid rock fragments ejected high in the air.

Answer 26

Pyroclastic Materials

Question 27

(product of explosion)

tiny fragments of glass that formed when liwuid magma exploded into the air.

Answer 27

Volcanic Ashes

Question 28

does have larger crystals.

Answer 28

Intrusive Rocks

Question 29

does not have or have smaller crystal.

Answer 29

Extrusive Rocks

Question 30

what are the processes that form magm?

Answer 30

1. ) Increasing temperature
2. ) Decreasing pressure
3. ) Addition of water

Question 31

what are the environments of magma formation?

Answer 31

1. ) In a spreading center
2. ) In a mantle plume
3. ) In a subduction zone

Question 32

is a rising column of hot plastic rocks that orginates deep within the mantle.

Answer 32

Mantle Plume

Question 33

(factors that affect the characteristics of magma)

the higher the silica content, the lower is the melting point.

Answer 33

Silica Content

Question 34

(factors that affect the characteristics of magma)

the higher the water content, the more explosion.

Answer 34

Water Content