The Water Cycle

Question 1

How is water transferred from the air to the ground?a.transpirationb.precipitationc.evaporationd.all of the above

Revolt · Accepted Answer

B: B

Question 2

Which of the following is a benefit of the water cycle to life?a.maintaining homeostasisb.transporting nutrientsc.cycling nutrientsd.all of the above

Revolt · Accepted Answer

D: D

Question 3

What is the leading cause of water pollution in the United States?a.point source pollutionb.nonpoint source pollutionc.lack of regulationd.none of the above

Revolt · Accepted Answer

B: B

Question 4

Water stored in snow and ice can return directly to the atmosphere through the process of sublimation. Please select the best answer from the choices provided

Revolt · Accepted Answer

A: T

Question 5

Which of the following is a possible source of water pollution? a. storms b. factories c. farms d. all of the above Please select the best answer from the choices provided

Revolt · Accepted Answer

D: D

Question 6

Compare nonpoint source pollution to point source pollution.

Revolt · Accepted Answer

Point source pollution and nonpoint source pollution are both potentially harmful to the environment. The main difference between point source pollution and nonpoint source pollution is that point source pollution is easier to track to its source. The source of pollution is easily identifiable in point source pollution, but not in nonpoint source pollution. For this reason, point source pollution is easier to regulate and therefore easier to control. This makes nonpoint source pollution potentially more harmful to the environment.

Question 7

Explain several ways water is stored during the water cycle.

Revolt · Accepted Answer

Student answers will vary. Possible answers include that water is stored as ice and snow on the ground during the water cycle. Water is also stored in clouds until precipitation occurs, which transfers water from the atmosphere to the ground. On the Earth’s surface, water can be stored in liquid form in streams, rivers, lakes, and oceans. Water stored below the surface is stored in aquifers. Animals and plants also store water. Plants release that stored water in the process of transpiration, which is another way that water is transferred back into the atmosphere.

Question 8

Explain why water used by plants and animals today has been around for millions of
years.

Revolt · Accepted Answer

Plants and animals use water that has been around for millions of years. Water that is part of plants and animals eventually returns to the water cycle. Plants and animals store water during the water cycle, but the water that they store is not lost to the water cycle. The water cycle continuously transfers water from one source to another. Water is not lost during this cycle, it is only stored in different forms.

Question 9

The majority of water on the Earth is usable by plants and animals.

Revolt · Accepted Answer

B: F

Question 10

Explain two ways in which water’s properties help sustain life.

Revolt · Accepted Answer

Student answers will vary. Possible answers include that capillarity and water’s relatively high specific heat are two properties of water that help sustain life. Capillarity is used by plants to get water from the ground through their roots to their leaves. Water’s high specific heat helps animals by helping regulate their body temperatures as they sweat or pant.

The Water Cycle Answers

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