Earth Resources
Practice Test
1.
Aggregates, bedrock, and metallic minerals are all __________.
a.
depleted resources
b.
renewable resources
c.
hydrothermal ores
d.
land resources
2.
Iron ores are commonly formed by __________.
a.
settling of crystals in igneous rocks
b.
placer deposits
c.
chemical precipitation in layers of sedimentary rocks
d.
hydrothermal fluid migration
3.
Concrete and mortar used in construction are made using __________.
a.
crystals
b.
ores
c.
aggregates
d.
diamonds
4.
Chromite ores often are found __________.
a.
within glacial deposits
b.
in metamorphic rocks
c.
in layered intrusions
d.
at the base of hydrothermal deposits
5.
Oxygen makes up __________ percent of Earth's air.
a.
12
b.
21
c.
80
d.
73
6.
According to the figure, why might it be harmful to a small seawater environment to receive too much rain?
a.
rainwater is too basic
b.
rainwater is the same pH as seawter
c.
rainwater is just pure water
d.
rainwater is too acidic
7.
Oxygen __________.
a.
has not always been a part of Earth's atmosphere
b.
was used up by early life-forms during photosynthesis
c.
is released by volcanic eruptions in large quantities
d.
has been in Earth's atmosphere for the past 4.6 billion years
8.
Which is a renewable resource?
a.
carbon
b.
silver
c.
oil
d.
diamonds
9.
What is a source of aggregate?
a.
xenoliths
b.
volcanic deposits
c.
glacial deposits
d.
batholiths
10.
Which of the pictures shows a nonrenewable resource?
a.
B
b.
C
c.
D
d.
A
11.
What part of this township shown in the map can negatively impact the air resources?
a.
highway
b.
river
c.
gravel pit
d.
woods
12.
Which is a nonrenewable resource?
a.
copper
b.
air
c.
trees
d.
phosphorus
13.
What is water used most for, according to the graph?
a.
electricity
b.
industry
c.
irrigation
d.
public supply
14.
What are natural resources?
a.
all renewable
b.
the resources that the oceans provide
c.
the resources that Earth provides
d.
all nonrenewable
15.
__________ has unique properties that allow life to exist on Earth.
a.
Water
b.
Carbon dioxide
c.
Methane
d.
Nitrogen
16.
According to the graph, which year saw the highest usage of water for irrigation?
a.
1980
b.
1960
c.
1990
d.
1950
17.
How long does it take to renew a forest used for paper?
a.
10 months to one year
b.
at least 50 years
c.
100 to 200 years
d.
10 to 20 years
18.
What is an example of natural air pollution?
a.
dust from desertification
b.
smoke from forest fires
c.
carbon monoxide from engine exhaust
d.
acid precipitation
19.
How is oxygen released into Earth's atmosphere?
a.
volcanic eruptions
b.
photosynthetic plants
c.
burning fossil fuels
d.
burning forests
20.
How can freshwater runoff be controlled?
a.
aquifers
b.
wells
c.
dams
d.
glacial lakes
