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WorksheetsUnit #3 Test: Earth Systems, Structure, and Processes
Total questions: 25
Worksheet time: 2hrs 5mins
How do nitrates affect water?
Chemicals cause algae to grow. When algae decay, this uses lots of oxygen. If the oxygen level in a lake or stream becomes too low, fish might not be able to survive.
Coral bleaching is the whitening of coral due to stress in the environment, such as an increase in water temperature or increased exposure to ultraviolet radiation.
Nitrogen bases compounds are often used in fertilizers. Runoff from fertilizers used in landscaping and farming contribute to high concentration of nitrates found in water. This is called algal bloom.
A measure of the cloudiness of water, from sediments, microscopic organisms, or pollutants. It affects organisms that need light to undergo photosynthesis. Structures some organisms use can get clogged in sediment.
How does turbidity affect water?
Chemicals cause algae to grow. When algae decay, this uses lots of oxygen. If the oxygen level in a lake or stream becomes too low, fish might not be able to survive.
Coral bleaching is the whitening of coral due to stress in the environment, such as an increase in water temperature or increased exposure to ultraviolet radiation.
Nitrogen bases compounds are often used in fertilizers. Runoff from fertilizers used in landscaping and farming contribute to high concentration of nitrates found in water. This is called algal bloom.
A measure of the cloudiness of water, from sediments, microscopic organisms, or pollutants. It affects organisms that need light to undergo photosynthesis. Structures some organisms use can get clogged in sediment.
The process of a gas changing to a liquid:
Condensation
Evaporation
Precipitation
Sublimation
Where is most of the Earth's freshwater located?
In the clouds
In the ice caps
In the ocean
In the ground
The series of natural processes by which water continually moves throughout the hydrosphere is called the:
Carbon Cycle
Nitrogen Cycle
Oxygen Cycle
Water Cycle
All of the water on and below Earth's surface and in the atmosphere.
Hydrosphere
Lake
Pond
Stream
Water is basic if the pH is _____ 7.
equal to
greater than
less than
no where near
Area where fresh and saltwater mix, producing variations in salinity and high biological activity.
Estuary
Lake
Pond
Stream
What effect does the water cycle have on the total amount of water on Earth?
The total amount of water on Earth is constantly increasing.
The total amount of water on Earth is constantly decreasing.
The total amount of water on Earth remains relatively constant.
The total amount of water on Earth changes due to periods of global warming and cooling.
How does temperature affect water?
Chemicals cause algae to grow. When algae decay, this uses lots of oxygen. If the oxygen level in a lake or stream becomes too low, fish might not be able to survive.
Coral bleaching is the whitening of coral due to stress in the environment, such as an increase in water temperature or increased exposure to ultraviolet radiation.
Nitrogen based compounds are often used in fertilizers. Runoff from fertilizers used in landscaping and farming contribute to high concentration of nitrates found in water. This is called algal bloom.
A measure of the cloudiness of water, from sediments, microscopic organisms, or pollutants. It affects organisms that need light to undergo photosynthesis. Structures some organisms use can get clogged in sediment.
The collection of data from a distance:
Bioindicator
Drones
Remote sensing
Thermometer
An organism that is sensitive to environmental conditions and is one of the first to respond to changes:
Algae
Bioindicator
Consumer
Producer
How would a large increase in the salinity of an estuary most likely affect the ecosystem of the estuary?
All organisms will die.
The number of salt-tolerant organisms would increase, and the number of salt-intolerant organisms would decrease.
All organisms would continue to live as they do now.
The number of salt-intolerant organisms would increase, and the number of salt-tolerant organisms would decrease.
Which would indicate the water in a lake is not safe for drinking?
Many varieties of fish in the lake.
High dissolved-oxygen levels in the lake.
Cold water temperature of the lake.
High turbidity levels in the lake.
Which characteristic of water quality provides the most information regarding the health of a water system?
Clarity
Temperature
Concentration of heavy metals
Presence of indicator species
How can upwellings improve fishing for ocean fishermen?
They cause the ocean water to get warmer.
They cause ocean currents to remain calm.
They bring nutrients from the cold, deep ocean waters.
They bring ocean currents from the equator.
Water is acidic if the pH is ______ 7.
equal to
greater than
less than
no where near
Also called the midnight zone, most animals that live in this zone are bioluminescent.
Deep Zone
Middle Zone
Surface Zone
Twilight Zone
About what percent of the Earth's surface is covered by water?
30
50
70
90
Which of the following is not an example of a reservoir?
Glaciers
Groundwater
Ice Caps
Stream
How does dissolved oxygen affect water?
Chemicals cause algae to grow. When algae decay, this uses lots of oxygen. If the oxygen level in a lake or stream becomes too low, fish might not be able to survive.
Coral bleaching is the whitening of coral due to stress in the environment, such as an increase in water temperature or increased exposure to ultraviolet radiation.
Nitrogen based compounds are often used in fertilizers. Runoff from fertilizers used in landscaping and farming contribute to high concentration of nitrates found in water. This is called algal bloom.
A measure of the cloudiness of water, from sediments, microscopic organisms, or pollutants. It affects organisms that need light to undergo photosynthesis. Structures some organisms use can get clogged in sediment.
Which best explains why all of the Earth's freshwater is not available for human use?
Most of Earth's freshwater is only in lakes.
Most of earths freshwater is underground.
Most of earth's freshwater is still in the water cycle.
Most of earths freshwater is frozen water.
Why is water important?
It is necessary for life.
Earth's climate is influenced by ocean currents that move thermal energy, or heat, around the Earth.
Large bodies of water affect local weather patterns.
Many organisms have water habitats.
All of the above.
If a lake has excess levels of nitrates in its water, what will most likely happen?
The temperature of the the lake water will decrease.
The turbidity levels of the lake will decrease.
The dissolved-oxygen levels in the lake will increase.
The growth of algae in the lake will increase.
Data can be collected through photos taken from the air or images taken from:
an airplane
a boat
satellites
the water
