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Volcano Test Part 2
Test Description: Second part
Instructions: Answer all questions to get your test result.
1) Two things control if an eruption will be explosive or quiet- the amount of water vapor and _______________________ trapped in the magma and how much ________________ the magma has
A
vapor ---- liquid
B
gas -------- silica
C
gas ----- liquid
D
vapor ------ gas
2) Basaltic magma produces a __________________ eruption.
A
explosive
B
quiet
C
large
D
silent
3) A volcanoes form depends on whether it is a result of a ______________________ or _________________________________ eruption and the type of _________________ it is.
A
loud or big -------------- magma
B
quiet or soft ---------------- magma
C
quiet or explosive ------ magma
D
quiet or loud --------------- rock
4) A ____________ is a steep-walled dip or depression around a volcano.
A
rift zone
B
hotspot
C
tephra
D
crater
5) If gases are able to escape easily from magma then the eruption will be __________.
A
quiet
B
soft
C
loud
D
explosive
6) ________________ magma explodes violently because pressure builds up.
A
none of the above
B
basaltic
C
granitic
D
andesitic
7) ________________ magma explodes more violently than basaltic magma because it has more silica.
A
andesitic
B
basaltic
C
none
D
granitic
8) Quiet eruptions of basaltic magma, flat layers, broad volcano, gently sloping sides, formed the Hawaiian Islands- This type of volcano is a_______________________.
A
Cinder Cone
B
Basaltic
C
Composite
D
Shield
9) xplosive eruptions that throw out rocks and lava known as tephra, steep-sided, loosely packed- This type of volcano is a __________.
A
Shield
B
Cinder Cone
C
Basaltic
D
Composite
10) Eruptions vary between quiet and explosive, the explosive periods release tephra, the quiet periods release lava, forms alternating layers- This type of volcano is a _____________
A
Composite
B
Basaltic
C
Cinder Cone
D
Shield
*select an answer for all questions
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