Igneous rocks form by

volcanic eruption and solidification

an opening where molten rock or smoke can exit

Obsidian is a glassy (no visible crystals) igneous rock. How did it form?

Cooled quickly on Earth's surface

The fine grained basalt on the Moon was most likely formed by

quick cooling of lava on the surface

Which of the following does NOT describe a volcano?

Magma, gas, and ash come out of Earth's surface

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Igneous rocks and volcanoes

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science, earth science, rocks

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Questions 28

Answers

1
Igneous rocks form by
volcanic eruption and compaction
volcanic eruption and erosion
volcanic eruption and solidification
volcanic eruption and sedmentation
2
When a volcano releases lava and/or gases
extinct
erosion
dormant
eruption
3
Mafic igneous rocks are
light colored and less dense
light colored and more dense
dark colored and more dense
dark colored and less dense
4
Rocks that form when magma or lava cools and becomes solid
igneous
sedimentary
metamorphic
vesicular
5
bowl-shaped depression with a rim
vent
cave
crater
magma chamber
6
How do we classify igneous rocks?
texture, sediments, color
color, shape, texture
texture, color, crystal size
crystal size, taste, color
7
What are rocks made of? (Pick the BEST answer)
Minerals
Gases
Elements
Atoms
8
"Coarse grained" means that same thing as
intrusive
extrusive
big crystals
small crystals
9
What does the word "igneous" mean?
sediments
pressure
heat
fire
10
Hot liquid rock that can be magma or lava
Molten rock
Metamorphic rock
Minerals
Igneous rock
11
A vent is...
an opening where molten rock or smoke can exit
a mountain or hill that lava erupts from
bowl-shaped depression with a rim
the part of a mountain with the highest elevation
12
A dormant volcano...
Has no lava
Is erupting
Is filling up with magma
Has no magma
13
Felsic igneous rocks are
light colored and less dense
dark colored and less dense
light colored and more dense
dark colors and more dense
14
Obsidian is a glassy (no visible crystals) igneous rock. How did it form?
Cooled quickly on Earth's surface
Cooled slowly, deep below Earth's surface
Cooled slowly on Earth's surface
Cooled quickly, deep below Earth's surface
15
"Fine grained" means that same thing as
extrusive
big crystals
small crystals
intrusive
16
A fine grained igneous rock was probably formed by
weathering and erosion
quick cooling of magma
quick cooling of lava
heat and pressure that didn't cause melting
17
Lava is
only felsic
molten rock on the surface
only mafic
molten rock underground
18
Molten rock underground
lava
ash
magma
gas
19
Which of the following is NOT true about intrusive rocks?
large crystals
formed from magma cooling
formed in Earth's core
formed inside the earth
20
The fine grained basalt on the Moon was most likely formed by
changes caused by heat and pressure
quick cooling of lava on the surface
cementing and compacting of sediments
slow cooling of magma deep underground
21
The part of a mountain with the highest elevation
summit
volcanic neck
hill
vent
22
What is the state rock of Wisconsin?
limestone
red granite
basalt
galena
23
The size of the crystals in an igneous rock tells you
if it's felsic or mafic
what type of volcano it came from
how fast or slow it cooled
if it's sedimentary or metamorphic
24
Fine, soft residue that remains after an explosion or eruption
rock
magma
ash
lava
25
The texture that forms when air escapes when lava is cooling
intrusive
extrusive
felsic
vesicular
26
Sudden damage/catastrophe
Dormant
Disaster
Magma chamber
Extinct
27
Which of the following does NOT describe a volcano?
A mountain or a hill
Has a crater and/or a vent
Magma, gas, and ash come out of Earth's surface
Lava, gas, and ash come out of Earth's surface
28
Which of the following is NOT true about extrusive rocks?
small crystals
formed by heat and pressure
formed from lava cooling
formed on Earth's surface

Igneous rocks and volcanoes Flashcards | StudBud