IGNEOUS ROCKS

Description

Quiz on IGNEOUS ROCKS, created by Chika Abigail on 09/01/2020.
Chika Abigail
Quiz by Chika Abigail, updated more than 1 year ago
Chika Abigail
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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