Ingeous Quiz

11 Questions | By Forddw123 | Updated: Sep 14, 2018 | Attempts: 229

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1.

Igneous comes from the Latin word IGNIS meaning
- A.
  
  Water
- B.
  
  Fire
- C.
  
  Ice
- D.
  
  Air
Correct Answer
B. Fire
2.

Igneous rocks form when rocks and minerals
- A.
  
  Are cemented and compacted together
- B.
  
  Are changed from high heat and pressure
- C.
  
  Are weathered into sediments
- D.
  
  Melt then cool
Correct Answer
D. Melt then cool
3.

Extrusive igneous rocks will have
- A.
  
  Large crystals and cool slowly
- B.
  
  Large crystals and cool quickly
- C.
  
  Small crystals and cool slowly
- D.
  
  Small crystals and cool quickly
Correct Answer
D. Small crystals and cool quickly
4.

Intrusive igneous rocks have larger crystals because they cool slowly
- A.
  
  On the surface of the crust
- B.
  
  Inside Earth's crust
- C.
  
  In oceans
- D.
  
  When they mix with air
Correct Answer
B. Inside Earth's crust
5.

This rock, granite, is
- A.
  
  Intrusive and fine grain
- B.
  
  Extrusive and fine grain
- C.
  
  Intrusive and coarse grain
- D.
  
  Extrusive and coarse grain
Correct Answer
C. Intrusive and coarse grain
6.

Felsic igneous rocks like rhyolite and granite have
- A.
  
  65%-75% silica (SiO2)
- B.
  
  55%-65% silica (Si O2)
- C.
  
  45%-55% silica (Si O2)
- D.
  
  Less then 45% silica (Si O2)
Correct Answer
A. 65%-75% silica (SiO2)
7.

Felsic Igneous rocks like rhyolite and granite have 65%-75% silica (SiO2) and are high in
- A.
  
  Potassium (K) Iron (Fe) Magnesium (Mg)
- B.
  
  Aluminum (Al) Potassium (K) Sodium (Na)
- C.
  
  Aluminum (Al) Magnesium (Mg) Iron (Fe)
- D.
  
  Aluminum (Al) Magnesium (Mg) Calcium (Ca)
Correct Answer
B. Aluminum (Al) Potassium (K) Sodium (Na)
8.

A mafic igneous rock such as basalt has a composition that is high in Iron (Fe) and Magnesium (Mg) and about
- A.
  
  65%-75% silica
- B.
  
  55%-65% silica
- C.
  
  45%-55% silica
- D.
  
  Under 45% silica
Correct Answer
C. 45%-55% silica
9.

We know different minerals have different melting points (and cooling/solidifying points). Bowen's Reaction Series shows us the mineral Olivine (high in Iron-Fe, Magnesium-Mg, and Calcium-Ca) is the last to melt and first to
- A.
  
  Start crystallizing as it cools
- B.
  
  Turn into sedimentary rock
- C.
  
  Turn into silica
- D.
  
  Wrong answer
Correct Answer
A. Start crystallizing as it cools
10.

Looking at Bowen's Reaction Series: Olivine and Pyroxine are
- A.
  
  Mafic
- B.
  
  Felsic
- C.
  
  Intermediate
- D.
  
  Wrong answer
Correct Answer
A. Mafic
11.

Looking at Bowen's Reaction Series: What rocks are the last to form (crystallize at the coolest temperatures)
- A.
  
  Andesite diorite
- B.
  
  Basalt gabbro
- C.
  
  Granite and Rhyolite
- D.
  
  Muscovite and quartz
Correct Answer
C. Granite and Rhyolite

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Current Version
Sep 14, 2018

Quiz Edited by
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Oct 23, 2014

Quiz Created by
Forddw123

Ingeous Quiz

Igneous comes from the Latin word IGNIS meaning

Igneous rocks form when rocks and minerals

Extrusive igneous rocks will have

Intrusive igneous rocks have larger crystals because they cool slowly

This rock, granite, is

Felsic igneous rocks like rhyolite and granite have

Felsic Igneous rocks like rhyolite and granite have 65%-75% silica (SiO2) and are high in

A mafic igneous rock such as basalt has a composition that is high in Iron (Fe) and Magnesium (Mg) and about

We know different minerals have different melting points (and cooling/solidifying points). Bowen's Reaction Series shows us the mineral Olivine (high in Iron-Fe, Magnesium-Mg, and Calcium-Ca) is the last to melt and first to

Looking at Bowen's Reaction Series: Olivine and Pyroxine are

Looking at Bowen's Reaction Series: What rocks are the last to form (crystallize at the coolest temperatures)