AnswersGA-GSE Earth SystemsLab: Mineral and Rock Classification

Lab: Mineral and Rock Classification — Unit test Answers

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Which statement is an example of an observation a scientist would make to classify a rock?

A
A rock is larger than other rocks.
B
A rock was found in a stream.
C
A rock is formed from molten lava.
D
A rock cracks in half after a rainstorm.
2
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Which phrase best describes igneous rocks?

A
form when lava and magma cool
B
accumulate sediments following erosion
C
require heat and pressure to be formed
D
consist of many sediment layers
3

What is the relationship between the rate at which molten material cools and a mineral's crystals?

A
The faster the cooling, the larger the crystals.
B
The slower the cooling, the larger the crystals.
C
The rate at which molten material cools does not affect crystal shape.
D
The rate at which molten material cools does not affect crystal size.
4

What is magma?

A
solid rock with a fine texture
B
cooled rock with large crystals
C
molten rock below Earth’s surface
D
flowing rock above Earth’s surface
5

Which sedimentary rock is burned to produce energy?

A
coal
B
iron ore
C
rock salt
D
limestone
6

Which type of metamorphic rock has randomly arranged grains and does not split into layers?

A
foliated
B
banded
C
massive
D
non-foliated
7

Which is one source of the sediments that form sedimentary rocks?

A
chunks of coal
B
particles in new rocks
C
liquid magma
D
materials dissolved in solutions
8

Which correctly lists three characteristics of minerals?

A
solid, crystal structure, definite chemical composition
B
organic, crystal structure, definite chemical composition
C
human-made, solid, organic
D
crystal structure, definite chemical composition, human-made
9

Where are extrusive igneous rocks typically found?

A
in a canyon
B
in a riverbed
C
near a dormant volcano
D
deep under Earth’s surface
10

Which process forms sedimentary rock in the rock cycle after sediments accumulate and combine?

A
Sediments undergo heat and pressure.
B
Sedimentary rock weathers and erodes.
C
Sediments compact and cement together.
D
Sedimentary rock experiences cooling and melting.
11

The image shows rock layers and magma under Earth's surface.

Question illustration
A
1
B
2
C
3
D
4
12

This is Mohs hardness scale.

Question illustration
A
apatite, quartz, fluorite, talc
B
diamond, talc, fluorite, topaz
C
talc, calcite, orthoclase, diamond
D
corundum, quartz, calcite, gypsum
13

A rock is found in an area that once had an active volcano and has since been affected by erosion. The rock has individual black and white crystals that are easy to see.Which other description fits the rock?

A
fine texture
B
cooled quickly
C
exposed to air and water
D
cooled inside the volcano
14

Which two processes are destructive forces that occur during sedimentary rock formation?

A
cementation and compaction
B
compaction and deposition
C
deposition and weathering
D
weathering and erosion
15

Which is one of the main categories of sedimentary rocks?

A
clastic
B
limestone
C
shale
D
sandstone
16

Which example is most likely made from both metals and gemstones?

A
necklace
B
soda can
C
window frame
D
kitchen utensil

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