Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Connor's 6A Study Guides > Unit 9 Volcano Study guide > Flashcards

Unit 9 Volcano Study guide Flashcards

1
Q

What is a Volcano

A

A mountain that forms from the Earth’s crust when magma
reaches the Earth’s surface.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is Magma

A

Molten material beneath the Earth’s surface.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is Lava

A

Molten material that has reached the Earth’s surface.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the difference between Lava and Magma

A

Lava has reached the surface while Magma is still underground

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Where do Volcanoes form

A

Volcanic belts are where volcanoes form.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the Ring of Fire

A

A major belt of volcanoes that stretches all around the Pacific Ocean.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are Diverging Plate Boundrys

A

Volcanoes form along mid-ocean ridges, where two plates pull apart.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are Converging Plate Boundrys

A

Many volcanoes form at these boundaries.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is an Island Arc

A

A series of volcanic islands created by converging plate
boundaries.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Where are three locations that have volcanoes in the USA

A

Mt. St. Helens in the Northwest U.S.

Mt. Rainier in the Northwest U.S.

Volcanoes among the Andes Mountains in South America.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is a Hot Spot

A

An area where material from deep within the Earth’s mantle rises through the crust and melts to form magma.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is inside a volcano

A

Inside a volcano is a system of passageways in which magma can move.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is a Magma Chamber

A

An area beneath the volcano where magma collects.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is a Pipe

A

A long tube extending from the magma chamber, to the surface, through which magma travels.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is a Vent

A

An opening through which molten rock and gas leave the volcano.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is Lava Flow

A

The spread of lava as it pours out of a vent.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is a Crater

A

A bowl shaped area that may from at the top of a volcano around the central vent.

18
Q

What is Silica

A

A material found in magma that forms from the elements
oxygen and silicon.

19
Q

What is a Quiet Eruption

A

Happen if a volcano’s magma is hot or low in silica.

20
Q

What are TWO Types of Lava

A

Pahoehoe - String looking
Aa - Rough/ Jagged Chunks

21
Q

What is an Explosive Eruption

A

Happen if a volcano’s magma is high in silica.

22
Q

What are ashes

A

The smallest, dust sized pieces of hardened lava.

23
Q

What are Cinders

A

Pebble sized pieces of hardened lava.

24
Q

What are Volcanic Bombs

A

The largest pieces of hardened lava.

25
Q

What is a Volcanic Hazard

A

Both quiet and explosive eruptions can cause damage.

26
Q

What is Pyroclastic Flow

A

The mixture of hot gases, ash, cinders, and bombs that flow down the sides of a volcano during an explosive eruption.

27
Q

What is an Active Volcano

A

A volcano that is erupting currently or shows signs of erupting in the near future.

28
Q

What is a Dormant Volcano

A

A volcano that is not active, but scientists expect to awaken in the future and become active again.

29
Q

What is an Extinct Volcano

A

A volcano that is unlikely to ever erupt again.

30
Q

What is a Island made from Volcanoes

A

The Hawaiian Islands.

31
Q

What is Oceanic Crust

A

Much of the ocean floor has been formed by cooled lava.

32
Q

What is a Caldera

A

The hole left when a volcano collapses.

33
Q

What is a Cinder Cone Volcano

A

A steep cone shaped hill or mountain formed by magma with a high silica content and explosive eruptions.

34
Q

What is a Composite Volcano

A

Tall cone shaped mountains in which layers of lava alternate with layers of ash.

35
Q

What is a Shield Volcano

A

A wide gently sloping mountain, formed by thin layers of lava
hardening on previous layers.

36
Q

What is a Lava Plateau

A

High, level areas formed by thin runny lava floods that travel for a distance before cooling and solidifying.

37
Q

What is a Volcanic Neck

A

Forms when magma hardens in a volcano’s pipe and the surrounding rock wears away.

38
Q

What are Dikes

A

Hardened magma that forces itself across rock layers.

39
Q

What are Sills

A

Magma that squeezes between horizontal rock layers.

40
Q

What is a Dome Mountain

A

A large body of hardened
magma that is forced to the
surface and causes other rock to bend in a dome shape.

41
Q

What is a Batholith

A

A mass of rock that formed
when a large body of magma
cooled inside the crust.

Connor's 6A Study Guides (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions