Understanding Igneous Rocks

Understanding Igneous Rocks

Assessment

Interactive Video

Science

9th - 10th Grade

Hard

Created by

Jennifer Brown

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary basis for classifying igneous rocks?

Their color

Their chemical composition

Their location of formation

Their age

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which minerals are typically found in mafic rocks?

Olivine and pyroxene

Quartz and feldspar

Mica and biotite

Calcite and dolomite

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What distinguishes felsic rocks from mafic rocks?

Felsic rocks are denser

Felsic rocks are darker

Felsic rocks are lighter and less dense

Felsic rocks contain more iron

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are ultramafic rocks primarily composed of?

High amounts of iron and magnesium

High amounts of silica

High amounts of aluminum

High amounts of calcium

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are xenoliths?

Pieces of the upper mantle embedded in lava

Crystals formed in cooling magma

Volcanic ash deposits

Sedimentary rock fragments

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of rock is formed from the partial melting of basalt?

Andesite

Diorite

Granite

Rhyolite

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary difference between andesite and diorite?

Andesite is volcanic, diorite is plutonic

Andesite is lighter in color

Diorite is formed from felsic magma

Diorite contains more quartz

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