1 — Water
Recognize the breakdown of water on Earth.
Choose the true statement about water on Earth.
a.) The majority of freshwater is contained in the ocean.
b.) A large percentage of the Earth’s freshwater is a
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1 — Water
Recognize the breakdown of water on Earth.
Choose the true statement about water on Earth.
a.) The majority of freshwater is contained in the ocean.
b.) A large percentage of the Earth’s freshwater is accessible to humans.
c.) Approximately 80% of the water on Earth can be found in oceans.
d.) Oceans cover about 70% of the Earth’s surface.
2 — Water Supply: Groundwater
Identify where fresh drinking water is located and how humans can access it.
Which of the following statements about groundwater is NOT true?
a.) Groundwater provides most of the drinking water consumed by humans.
b.) Lining and sealing wells can protect groundwater from biological or chemical
contamination.
c.) Roads built by humans enable water to soak into the earth.
d.) Chemical fertilizer runoff is a common source of groundwater contamination.
3 — Water Supply: Dams
Determine the benefits and impacts of dams.
Which of the following is an argument for the removal of dams?
a.) Biodiversity will decrease upon a dam’s removal, but species will soon return.
b.) The region’s growing population is placing an increased demand on water supplies.
c.) Dam removal will result in an increase in hydroelectric power in the short term.
d.) We must restore water flow to improve animal habitat and promote biodiversity.
4 — Water Availability
Recognize issues related to the availability of water.
Which of the following statements is true about water supply and demand?
a.) Water use has been growing at five times the rate of population growth.
b.) The amount of available clean water is increasing due to technology.
c.) Agriculture uses 90% of readily available freshwater.
d.) Many major aquifers have reduced levels of available water
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