8/9/2019 Volcano Quiz
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Quiz no. ____
VOLCANOES
Name:______________________________________________ Date:
________
Grade and Section: ______________
Be honest, even if others are not, even if others will not, even
if others cannot.
I. Encircle the letter o the correct an!"er.
1. Which of the following volcano hazards is made up of rocky
particles about the size of a grain
of sand?
a. Volcanic bombs
b. Volcanic dust
c. Volcanic ash
. Which type of rock would you e!pect to form from magma?
a. "gneous rock
b. #edimentary rock
c. $etamorphic rock
%. &efore the lava reaches the surface' the molten material
is called _________.
a. rockb. magma
c. volcanic ash
(. )he *ing of +ire refers to the volcanoes that are
___________________.
a. located in ,frica
b. located at hot spots
c. located around the borders of the -acic /cean and surrounding
continents.
0. What is the most abundant gas associated with volcanic
activity
a. chlorine
b. sulfur o!ide
c. carbon dio!ide. , volcano is
a. a mountain or hill formed around a crack in the earth2s
crust.
b. a mountain wit h a 3agged peak
c. a mountain or hill with a 4at top
5. )he hot rock that 4ows down the sides of the volcano is
a. lava
b. magma
c. dormant
6. )he opening created in the top of a volcano after a volcanic
eruption is a ___________.
a. crater
b. chamber
c. Vent
7. Volcanoes erupt because of
a. the pressure in the earth forcing the hot rock through a
crack.
b. an earth8uake happening nearby
c. the earth getting overheated
19. )hese are volcanoes are volcanoes which has not erupted
within historic times' but has the
capacity to become active.
a. ,ctive Volcanoes
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II. Com#letion. Com#lete the #ara$ra#h. %ill in the &lan'!.
Choo!e the an!"er rom
the &o( &elo". )rite *our an!"er on the &lan'
#ro+ided.
,o" a Volcano Eru#t!
D1E______________________occurs whenlava' gases and solid
fragments are e3ected from volcanic
vents.
)he DE_______________- collectionof magma inside the earth'
below the volcano' is surrounded by
solid rocks. )he weight of the overlying rock presses on the
chamber. )his pressure causes gasA
lled magma to rise and melt through a fractured or a weak part
of the rock. ,s magma
continues to rise' it creates an opening called
D%E________________ or the main outlet for the
magma to escape. "t may also branch out into smaller channels
called D(E _________________. $ost
of the magma and other volcanic material come out to the earth@s
surface through the centra
vent. , D0E_____________ is formed at the top of volcano after
its eruption has stopped.
III. ut a chec' /01 i the !tatement !ho"! a $ood e2ect o
+olcanic eru#tion and a
cro!! /(1 i not.
____ 1. Volcanic ashes make the soil fertile
____ . Fava 4ows destroy crops
____ %. Geothermal steam can be used for power generation
____ (. -ollution
____ 0. Volcanic eruptions produce materials with industrial
uses such as pumice' bricks' cement
and hollow blocks.
chamber central vent
crater secondary ventvolcanic eruption
