WorksheetsVolcanoes
Total questions: 20
Worksheet time: 12mins
Name
Class
Date
1.
What is the opening in Earth's crust through which molten rock, gases, and ash erupt?
a)
Divergent Boundary
b)
Magma
c)
Subduction Boundary
d)
Volcano
2.
What is molten rock that has formed deep within the Earth?
a)
Hot Spot
b)
Magma
c)
Lava
d)
Volcano
3.
Why does magma tend to rise to the surface?
a)
It has large amounts of silica.
b)
It contains very little silica.
c)
It is denser than the surrounding material.
d)
It is less dense than the surrounding material.
4.
The formation of magma depends on which set of conditions?
a)
Pressure, Density, and Water Content
b)
Temperature, Density, and Pressure
c)
Temperature, Density, and Water Content
d)
Temperature, Pressure, and Water Content
5.
The volcanoes on the Hawaiian Islands form due to which of the following?
a)
Divergent Boundary
b)
Hot Spot
c)
Subduction Boundary
d)
Transform Boundary
6.
What is the principal ingredient to all types of magma?
a)
Iron
b)
Magnesium
c)
Silica
d)
Water
7.
What type of volcano is Kilauea, which is located in Hawaii?
a)
Caldera
b)
Cinder Cone
c)
Composite Volcano
d)
Shield Volcano
8.
Where are most volcanoes found?
a)
Southern Hemisphere
b)
Ring of Fire
c)
Mid-Atlantic Ridge
d)
Hot Spots
9.
What is molten rock that has reached the Earth's surface?
a)
Aa
b)
Lava
c)
Magma
d)
Pahoehoe
10.
In volcanic areas, groundwater heated by magma is a source of
a)
lava flows
b)
silicia
c)
geothermal energy
d)
pyroclastic flows
11.
A dead volcano is called what?
a)
active
b)
dormant
c)
extinct
12.
A sleeping volcano is called what?
a)
active
b)
dormant
c)
extinct
13.
Volcanoes can be found...
a)
on land
b)
under water
c)
on islands
d)
all of the above
14.
This person studies volcanoes and the Earth's internal heat
a)
Seismologist
b)
Meteorologist
c)
Volcanologist
d)
Geologist
15.
What is a dent or depression called on a volcano?
a)
side vent
b)
bump
c)
dent
d)
crater
16.
What is a smaller earthquake that follows a larger earthquake?
a)
Aftershock
b)
Liquefaction
c)
Seismic Gap
d)
Tsunami
17.
The outside layer of the earth is called ______________________.
a)
core
b)
crust
c)
mantle
d)
outer core
18.
The huge pieces of the earth's crust are called ____________________________.
a)
crust
b)
plates
c)
directions
d)
seismos
19.
Earthquakes occur in the _____________.
a)
crust
b)
mantle
c)
inner core
d)
outer co
20.
How are lava and magma most different?
a)
their location
b)
their heat
c)
their color
d)
what they eat for lunch
100 %
