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20540253
IGNEOUS ROCKS
Description
Quiz on IGNEOUS ROCKS, created by Chika Abigail on 09/01/2020.
No tags specified
types of magma
extrusive and intrusive rocks
volcanic and plutonic rocks
mafic magma
felsic magma
volcanoes
pahoehoe
aa
textures
phaneritic
glassy
basalt
granite
cinder cone
caldera
Quiz by
Chika Abigail
, updated more than 1 year ago
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Created by
Chika Abigail
almost 5 years ago
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Resource summary
Question 1
Question
What are the two types of magma?
Answer
Felsic and mafic magma
Basic and acidic magma
Question 2
Question
What are the characteristics of mafic magma?
Answer
Crystallizes at a Very hot temperature (900-1200°C)
Is very fluid
Has low silica content (~50%)
contains magnesium and iron rich minerals
its volatiles gases are low
It produces flowing volcanoes: Lava flows
All of the Above
Question 3
Question
Which is more dense, mafic magma or felsic magma
Answer
Felsic
Mafic
Question 4
Question
What is an example of mafic magma?
Answer
Oceanic crust
Continental crust
Question 5
Question
What type of volcanoes does mafic magma create?
Answer
Shield and cinder cone volcanoes
calderas and shield volcanoes
Question 6
Question
What are the characteristics of felsic magma?
Answer
it crystallizes at a temperature that is less than 850°C
It is highly viscous
It has a high silica content
It contains felspar and silica rich minerals like quartz
Its volatile gasses may reach up to 15%
water and carbon dioxide are its main volatile gasses
All of the Above
Question 7
Question
Which is less dense, felsic magma or mafic magma?
Answer
Mafic magma
felsic magma
Question 8
Question
What is an example of felsic magma?
Answer
oceanic crust
continental crust
Question 9
Question
What type of volcanoes does felsic magma create?
Answer
Stratovolcanoes and or composite cone
shield volcano and cinder cone volcanoes
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