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WorksheetsEarth Science NC Check In Review
Total questions: 55
Worksheet time: 44mins
Name
Class
Date
1.
Which would most likely result in an unhealthy aquatic habitat?
a)
a decrease in turbidity
b)
a decrease in nitrates levels
c)
an increase in water temperature
d)
an increase in dissolved oxygen levels
2.
In which part of the ocean do the greatest number of organisms live?
a)
in the deep zone to escape predators
b)
near the shore to burrow in the sand
c)
close to the surface to be near the largest food source
d)
in the open ocean to regulate their bodies in cooler temperatures
3.
Which technological tool uses a sound echo to measure distance?
a)
sonar
b)
submarine
c)
ocean buoy
d)
robotic probe
4.
Why might countries bordering the Pacific ocean have problems getting enough water to meet the needs of their citizens?
a)
The water is too cold to use.
b)
Removing salt from the water is too expensive and impractical.
c)
There are more people in the countries than the water can nourish.
5.
Which is the best way to conserve water?
a)
Take a daily bath rather than a shower.
b)
Wash several small loads of clothing rather than a few large ones
c)
Use the dishwasher only for small loads rather than for large loads.
d)
Install low-flow toilets that reduce the amount of water being flushed.
6.
Why do large numbers of ocean life-forms live near areas of upwelling?
a)
Upwelling brings nutrients to the surface.
b)
Upwelling brings warm water to the surface
c)
Upwelling helps push small fish up toward the surface
d)
D. Upwelling keeps large predator fish away from the surface
7.
Which of the following could occur as the result of runoff of high nitrogen fertilizers from farmlands near a lake?
a)
an increase in algae growth resulting in low oxygen levels in the lake
b)
a decrease in mineral storage reducing carbon levels of the lake
c)
a decrease in pollution resulting in lower ozone levels in the lake area
d)
an increase in deforestation reducing animal populations in the lake area
8.
Where does most fresh water exist?
a)
ice caps, lakes, and streams
b)
glaciers, rivers, and oceans
c)
aquifers, ice caps, and glaciers
9.
Which is the main source of dissolved oxygen in a body of water?
a)
erosion
b)
the atmosphere
c)
volcanic eruptions
10.
Which can households do to help the local wastewater treatment facility function properly?
a)
put food waste in a composter instead of in the trash
b)
dispose of cooking oil and grease in the kitchen sink
c)
. flush only human waste and toilet paper down the toilet
d)
volunteer to help operate the treatment plant once a month
11.
Which would most likely cause a sudden increase of nitrates in a waterway?
a)
spill from an oil tanker
b)
runoff from a boat yard
c)
runoff from a golf course
d)
discharge from a chemical plant
12.
Which is an unlikely source of water for a river basin?
a)
melting snow
b)
ocean water
c)
melting ice
13.
Of the 74% of Earth’s surface that is covered in water, which contains the most water?
a)
lakes
b)
rivers
c)
oceans
d)
streams
14.
Which is Earth’s largest source of drinkable water?
a)
lakes
b)
rivers
c)
oceans
d)
aquifers
15.
If a large amount of fertilizer enters a lake, which will most likely happen?
a)
The fish population in the lake will increase.
b)
The temperature of the lake water will increase.
c)
The number of fish dying in the lake will increase.
d)
The available food supply for the fish in the lake will increase.
16.
Which most likely has the highest number of contaminants in the water?
a)
a water system with moderate turbidity
b)
a water system with high turbidity
c)
a water system with low turbidity
d)
a water system with no turbidity
17.
Fish tank owners will often add ammonia to the tank to increase the nitrate levels. If too much ammonia is added, what might occur?
a)
Algae growth will stop, and oxygen will not be produced.
b)
Algae growth will increase, causing oxygen levels to increase.
c)
Algae growth will increase, causing oxygen levels to decrease.
d)
Algae growth will decrease, causing oxygen levels to decrease.
18.
How does the use of a pH meter help monitor the hydrosphere?
a)
by indicating whether the water is too acidic or basic
b)
by indicating if there is too much sediment in the water
c)
by indicating whether microorganisms are living in the water
d)
by indicating if there is enough dissolved oxygen in the water
19.
Which best describes the water in an estuary?
a)
brackish
b)
frozen
c)
fresh
d)
salt
20.
Which would result if annual rainfall amounts were reduced by 50%?
a)
a flood
b)
a surplus
c)
a drought
d)
a monsoon
21.
Which is the most likely result of an increase in the level of nitrates in a body of water?
a)
increase in turbidity
b)
increase in plant growth
c)
. increase in fish population
d)
increase in water temperature
22.
Which chemical elements in fertilizers pollute stormwater runoff and contribute to excessive plant growth in a water system?
a)
iron and lead
b)
copper and zinc
c)
calcium and magnesium
d)
phosphorous and nitrogen
23.
Which is most likely indicated by the presence of many dead fish on a coastal shoreline?
a)
higher tides
b)
ocean pollution
c)
stronger currents
d)
heavy inland winds
24.
Which is the most important reason for maintaining clean water?
a)
Energy cannot be generated without water.
b)
Organisms cannot live and grow without water.
c)
Goods cannot be transported easily without water.
d)
People cannot maintain proper hygiene without water.
25.
Which is one way people can help prevent the pollution of lakes and rivers?
a)
by controlling soil erosion around lakes and rivers
b)
by clearing land around lakes and rivers to build homes
c)
by limiting the amount of fish caught in lakes and rivers
d)
by creating hiking and biking trails along lakes and rivers
26.
Which will most likely happen to a biological indicator species if there is a sudden increase in pollution?
a)
There will be a significant increase in the population numbers and the quality of the individuals.
b)
There will be a significant decrease in the population numbers and the quality of the individuals.
c)
The biological indicator species will reproduce at lower rates, which will maintain population numbers.
d)
The biological indicator species will reproduce at higher rates, which will maintain population numbers.
27.
Which best describes the importance of an aquifer?
a)
It holds uncontaminated ground water for human consumption.
b)
It supplies all water for lakes and rivers.
c)
It provides water for oceans.
28.
Which is an incorrect order of the water cycle?
a)
evaporation condensation precipitation
b)
evaporation precipitation condensation
c)
precipitation evaporation condensation
29.
How might fertilizer runoff from a soybean field affect the quality of water in the farm pond?
a)
It increases the pH level.
b)
It decreases the overall water temperature.
c)
It promotes algae growth, which lowers the oxygen level in the pond
d)
It decreases the turbidity, which lowers the amount of particles in the pond.
30.
What would most likely happen to the entire ocean food web if plankton were not available?
a)
All organisms that live in the ocean would not survive.
b)
The organisms would adapt and find another source of food.
c)
Only whales and other large ocean mammals would be affected.
31.
Why are upwellings in the ocean essential for some organisms to survive?
a)
because many animals need low-tide conditions each day
b)
because currents carry predators away from the surface
c)
because the warm water kills bacteria before it can harm plankton
d)
because needed nutrients and dissolved gases are brought into new areas
32.
The EPA (Environmental Protection Agency) regulates the level of turbidity in drinking water to protect public health. The EPA sets the limit at 0.3 NTU (Nephelometric Turbidity Units). The data below shows the turbidity level of four samples taken from the same location over four consecutive days.
Based on the data, which best explains the quality of the drinking water?
Based on the data, which best explains the quality of the drinking water?
a)
The drinking water is safe because the first two samples are belowthe recommended limit.
b)
The drinking water is unsafe because the last two samples are above the recommended limit.
c)
The drinking water is unsafe because the last two samples are below the recommended limit.
d)
The drinking water is safe because the average of the samples is below the recommended limit.
33.
The water cycle describes the movement of the water of Earth. About 96% of the water of Earth is the salt water found in the oceans while the remaining 4% is fresh water. Where would the majority of the freshwater on Earth be found?
a)
groundwater and aquifers
b)
swamps and wetlands
c)
ice caps and glaciers
d)
lakes and rivers
34.
Where is the majority of Earth’s freshwater found?
a)
polar ice caps
b)
rivers
c)
ponds
d)
lakes
35.
Which best explains why a scientist would use nets to capture and count organisms in a river?
a)
to measure pH
b)
to measure turbidity
c)
to measure biodiversity
d)
to measure temperature
36.
Which is most likely an example of point source pollution?
a)
fertilizer sprayed onto a field
b)
water runoff from a city street
c)
a pipe flowing into a river
37.
In many communities, a network of pipes called sanitary sewers carries sewage away to
a)
wastewater treatment plants
b)
desalination plants
c)
irrigation systems.
d)
hydroelectric power plants
38.
An example of how living things can help clean up polluted water is
a)
driving more gas-powered vehicles
b)
allowing the rock in an aquifer to naturally purify groundwater
c)
avoiding using fertilizers on lawns or gardens.
d)
adding oil-eating bacteria to water polluted by an oil spill.
39.
Pesticides are most likely to be found in runoff from
a)
roads.
b)
farm fields.
c)
homes.
d)
factories.
40.
Specific sources of pollution that can be identified are called
a)
point sources.
b)
nonpoint sources
c)
runoff.
d)
sewage.
41.
According to the law of superposition, the oldest fossils are found
a)
At the top of the rock layers
b)
Near the bottom of the rock layers
c)
In the middle of the rock layers
d)
Somewhat near the surface
42.
This rock was another type of rock that was heated and compressed over time. What type of rock is this?
a)
Sedimentary
b)
Igneous
c)
Metamorphic
43.
Longest part of Earths history
a)
Cambrian
b)
Precambrian
c)
Phaenorozoic
d)
Cenozoic
44.
The longest subdivision of time
a)
Eon
b)
Era
c)
Epoch
d)
Extinct
45.
According to the law of superposition, which layer is the youngest?
a)
A
b)
B
c)
C
46.
This is used to identify and define a geologic time period.
a)
Mold Fossil
b)
Index Fossil
c)
Petrified Fossil
d)
Cast Fossil
47.
A species that is no longer living and cannot come back is classified as _____________.
a)
Absolute
b)
Relative
c)
Extinct
d)
Living
48.
Which rock layer is the oldest
a)
A
b)
E
c)
D
d)
C
49.
Which of the following rock types can you find fossils in?
a)
Sedimentary
b)
Igenous
c)
Metamorphic
d)
Volcanic
50.
Which type of rock results from melting and cooling of magma?
a)
Igneous
b)
Metamorphic
c)
Sedimentary
d)
Extrusive
51.
Which type of igneous rock forms above ground?
a)
Intrusive
b)
Organic
c)
Extrusive
d)
Foliated
52.
A metamorphic rock changes into an igneous rock by what two processes?
a)
Melting and cooling
b)
Extreme heat and pressure
c)
Compaction and cementation
d)
Weathering and erosion
53.
Which of the following correctly lists the layers in order from oldest to youngest?
a)
A, B, C, D, E
b)
E, B, C, D, A
c)
E, D, C, B, A
d)
C, B, A, D, E
54.
Which layer formed first?
a)
Rock Layer W
b)
Rock Layer X
c)
Rock Layer Y
d)
Rock Layer Z
55.
Most sedimentary rock forms in the ocean. This is because oceans -
a)
emit much less pollution that other habitats
b)
receive the majority of the Sun's energy
c)
have fewer plants and animals than on land
d)
are where most bits of broken rock get deposited
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