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WorksheetsChapter 10 - Volcanoes - Open Note Quiz
Total questions: 20
Worksheet time: 2hrs 40mins
Where is the Ring of Fire located?
circles through the Atlantic Ocean
in both the Atlantic and Pacific Oceans
circles through the Pacific Ocean
Intraplate volcanism happens ______.
in the ocean
on land
within a tectonic plate
Which term describes the "decreased pressure that lowers the melting point of rocks" deep in the Earth?
decompression melting
divergence
pressure melting
T or F: Magma forms in the crust & upper mantle when solid rock melts.
True
False
Also known as Strato Volcanoes, this volcano is made from alternating layers of ash and lava is called a(n) _________________ volcano
composite
cinder cone
shield
fissure
What role do gases play in eruptions?
causes magma to be more viscous
gives the chemical composition of the magma
gives the explosive character of the magma
gives the highest temperature a magma could have
What is the opening that extends from the magma chamber to the top of the volcano called?
magma
lava
vent
crater
This forms when magma hardens in a volcano's pipe and the surrounding rock later wears away.
a dike
a sill
a lava plateau
volcanic neck
Magma that squeezes between horizontal rock layers and hardens is called a ______.
volcanic neck
dike
sill
lava plateau
A lahar is when
huge quantities of ash are ejected
water-soaked volcanic ash and rock slide rapidly downhill
a scorching mixture of glowing particles and gases sweep rapidly down a volcano
magma slowly crystallizes and forms intrusive igneous rock
Plutons are classified by
their viscosity
their relationship to surrounding rock
the steepness of slope
the violence of eruption
