WorksheetsVolcanism Lesson
Total questions: 20
Worksheet time: 11mins
The semi-molten rock underneath a volcano is called ____________
geyser
lahar
lava
magma
Active volcanoes are most likely to be found ___________
in convergent boundaries
in the Pacific Ring of Fire
where tectonic plates pull apart
in transformed boundaries
When magma is thick with more dissolved gas, we can expect the volcanic eruption to be a/an _______
oozing ash and lava
lava frothing over the crater
spewing water like a geyser
violent ejection of ash and lava
When magma is thick with more dissolved gas, we can expect the volcanic eruption to be a/an _______
oozing ash and lava
lava frothing over the crater
spewing water like a geyser
violent ejection of ash and lava
Which of the following formations would most likely result from a single violent volcanic eruption?
caldera
shield volcano
stratovolcano
cinder cone
Which is true about volcanoes in the Philippines?
they are always big.
they erupt violently.
they all have perfect cones.
they are parts of the Pacific Ring of Fire
What is a volcano?
The movement of the Earth's crust by the movement of plate boundaries
A mountain created by the folding of the Earth's crust
A cone-shaped mountain or hill formed by eruptions of lava and ash
A landform that extends above the surrounding terrain
Magma's resistance to flow, or how thick it is, is called _________
volcanism
viscosity
pyroclastic flow
convection
The "Ring of Fire" is a volcanic island arc extending from the southwestern Pacific through Indonesia. The island arc formed as a result of ________ collision.
oceanic plate-continental plate
oceanic plate-oceanic plate
continental-plate-continental plate
terrane-craton
The Himalayas formed as a result of the ongoing collision of the Indian and Eurasian plates. This is an example of ________ collision.
oceanic plate-continental plate
oceanic plate-oceanic plate
continental-plate-continental plate
terrane-craton
Molten rock that pours forth on Earth's surface is called
metamorphic.
magma.
lava.
pyroclastics.
Small conical-shaped hills with truncated tops that formed during moderately explosive volcanic eruptions are known as
cinder cones.
craters.
calderas.
domes.
Large, basin-shaped depressions that form when summit materials on a volcanic mountain collapse inward after an eruption or loss of magma are known as
cinder cones.
craters.
calderas.
domes.
Which of the following most completely defines a volcano?
a cone-shaped structure on land where pyroclastic material is ejected
a partly molten region of Earth's mantle where subducting rock is melted
a ridge system between two diverging plates through which magma escapes
a vent or hole in Earth's surface through which magma or ash escapes
What process causes the volcanoes of the Hawaiian Islands to form?
subduction zones
divergent boundaries
hot spots
convergent boundaries
Which kind of volcanism is most likely to occur at location A in the following map?
Location A is a hot spot in oceanic crust, so it is likely to erupt lava with a low silica content, resulting in relatively quiet volcanism.
Location A is a hot spot in oceanic crust, so it is likely to erupt lava with a high silica content, resulting in explosive volcanism.
Location A is a mid-ocean ridge at a divergent boundary, so it is likely to erupt lava with a low silica content, resulting in relatively quiet volcanism.
Location A is a mid-ocean ridge at a divergent boundary, so it is likely to erupt lava with a high silica content, resulting in explosive volcanism.
Which of the following is an example of Intraplate Volcanism?
Mid-Atlantic Ridge
Cascade Mountain Range
Hawaiian Islands
