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Earth Science, Chapter 13, Volcanoes, Review

Total questions: 40

Worksheet time: 20mins

Name
Class
Date
1.

A quiet eruption produces what type of dangerous hazard?

a)

lava flow

b)

lahar

c)

pyroclastic flows

d)

lave domes

2.

Where do most volcanoes form?

a)

Middle of tectonic plates

b)

Plate boundaries and along edges of continents

c)

Antactica

d)

Middle of continents

3.

The Hawaiian islands are formed by

a)

subduction

b)

earthquakes

c)

hot spots

d)

divergent plates

4.

Volcanoes that have both lava flows and pyroclastic flows are called

a)

composite volcano

b)

cinder cone volcano

c)

shield volcano

d)

that really big volcano over yonder

5.

The opening of a volcano labeled "A" is called what?

a)

Neck

b)

Conduit

c)

Vent

d)

Magma

6.

The connecting pipe between the magma chamber and the vent labeled "C" is called what?

a)

Neck

b)

pyroclastic flow

c)

lava

d)

side vent

7.

The place where all the lava comes from labeled "D" is called the?

a)

Neck

b)

magma chamber

c)

lava

d)

side vent

8.

The place where all the lava comes from labeled "D" is called the?

a)

Neck

b)

magma chamber

c)

lava

d)

side vent

9.

The location where a volcano erupts but it is not its main exiting point labeled "F" is called

a)

Neck

b)

magma chamber

c)

vent

d)

side vent

10.

Nonviscous lava that is very runny but very hot is called

a)

pahoehoe

b)

AA

c)

pyroclastic flows

d)

lava

11.

A huge crater caused by the collapsing of a magma chamber is called a _______.

a)

crater

b)

vent

c)

caldera

d)

shield volcano

12.

A stratovolcano is also known as a _______.

a)

Composite volcano

b)

cinder cone volcano

c)

shield volcano

d)

that small volcano over there

13.

A volcano that produces large pyroclastic flows only is called a

a)

cinder cone volcano

b)

composite volcano

c)

shield volcano

14.

A large cloud of hot ash, cinders, blocks, etc. that travels very fast is called

a)

pahoehoe

b)

AA

c)

pyroclastic flow

d)

dust storm

15.

Viscosity of magma is determined by

a)

magma composition/silica

b)

magma temperature

c)

amount of dissolved gases

d)

all of these

16.

If the viscosity of magma goes up, then the eruption is

a)

more violent

b)

less violent

c)

stays the same

d)

none of these

17.

This gas is responsible for the rotten egg smell that you smell around volcanoes and hot springs.

a)

carbon dioxide

b)

dihydrogen oxide

c)

sulfur dioxide

d)

carbon monoxide

18.

What volcanic feature happens when magma cuts through rock vertically?

a)

Sill

b)

Laccolith

c)

Volcanic Dike

d)

Batholith

19.

A large, flat volcano that produces quiet eruptions is called a

a)

shield volcano

b)

composite volcano

c)

cinder cone volcano

d)

super volcano

20.
When lava erupts through cracks in the crust we get...
a)
geysers
b)
volcanoes
c)
earthquakes
21.
What is the name of the most geologically active area on earth?
a)
The ring of fire
b)
yellowstone
c)
mid atlantic ridge
22.
What kind of boundary produces the most explosive volcanoes?
a)
divergent
b)
convergent
c)
strike slip
23.

This is most likely a__________volcano because it has gradual sloping sides.
a)
composite
b)
shield
c)
cinder cone
24.
This is most likely a _______________ volcano because it is made up of only pyroclastic debris.
a)
shield
b)
cinder cone
c)
composite
25.
Basalt is a dark smooth rock.  What kind of lava did it come from?
a)
mafic
b)
felsic
26.
Pumice is a light colored rock that is full of bubbles.  What do you know about it?
a)
it is mafic and cooled slowly
b)
it is felsic and cooled slowly
c)
it is mafic and cooled quickly
d)
it is felsic and cooled quickly
27.
What kind of pyroclastic debris makes up small pebbles?
a)
Lapilli
b)
blocky lava
c)
ash
28.
Which kind of lava flows in ropey, smooth rivers?
a)
aa lava
b)
pahoehoe
c)
blocky
d)
pillow
29.
What kind of lava and rocks do we find at shield volcanoes?
a)
mafic
b)
felsic
c)
mixed
30.
What kind of lava and rocks do we find at cinder cone volcanoes?
a)
mafic
b)
felsic
c)
mixed
31.
What type of rock would we find on Hawaii?
a)
mafic
b)
felsic
32.
What is the difference between lava and magma?
a)
lava is inside the earth, magma is outside
b)
lava is solid, magma is liquid
c)
lava is outside the earth, magma is inside
d)
lava is liquid, magma is solid
33.
Which is NOT true about hot spots?
a)
They do not move
b)
They do move
c)
They create volcanic islands
d)
Plates move over them
34.
What is viscosity?
a)
Ability to flow
b)
How melted something is
c)
How solid something is
d)
Resistance to flow
35.
Which is NOT true about felsic lava?
a)
It has less viscosity than mafic
b)
It is cooler in temperature
c)
It is more explosive than mafic
d)
It is common in continental crust
36.
Why is felsic lava more explosive than mafic lava?
a)
It is a higher temperature
b)
It has more iron and magnesium
c)
It is thinner and more runny
d)
Gasses are trapped 
37.
When lava cools into jagged chunks, it is called _____.
a)
aa
b)
ribbon lava
c)
pillow lava
d)
pahoehoe
38.
Put the pyroclastic materials in order from smallest to largest.
a)
dust, ash, lapilli, bombs, blocks
b)
dust, lapilli, ash, bombs blocks
c)
blocks, bombs, lapilli, ash, dust
d)
ash, dust, lapilli, bombs, blocks
39.
This pyroclastic material is about the size of rice grains. 
a)
volcanic ash
b)
volcanic dust
c)
lapilli
d)
volcanic blocks
40.
This is SOLID rock blasted from a volcano.
a)
lapilli
b)
volcanic block
c)
pahoehoe
d)
volcanic bomb

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