Natural Resources Test

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Natural Resources Test - 10

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Weekly Quiz Competition

Question 1
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Use the following information to answer the next question.

Consumption of dirty or polluted water may lead to water borne diseases. These diseases spread primarily through contaminated water.

Which of the following diseases is not caused by the consumption of polluted water?

A
Jaundice

B
Typhoid

C
Cholera

D
Malaria

Solution

Among the given alternatives, malaria is not a water-borne disease. Malaria is caused by a parasite that is transmitted by infected mosquitoes.

The correct answer is D.

Why alternative A is wrong:

Jaundice is caused by viral infection. The virus is present in contaminated water.

Why alternative B is wrong:

Typhoid is a water-borne disease and is caused by bacterial infection.

Why alternative C is wrong:

Cholera is water-borne disease and is caused by bacterial infection.
Question 2
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Precipitation is the process of the water cycle in which water

A
falls from clouds as rain

B
vapor changes into clouds

C
is converted to water vapor

D
moves across the surface of Earth

Solution

When water droplets become too heavy to float in air, they fall on Earth in the form of rainfall. This process is known as precipitation. Precipitation also occurs in the form of snow or ice.

The correct answer is A.

Why alternative B is wrong:

Condensation is the transformation of water vapor to water droplets. Condensation of water vapor in atmosphere results in the formation of clouds.

Why alternative C is wrong:

Sun’s energy heats up water present in rivers, seas, and oceans. Solar energy turns water into water vapor. This process is known as evaporation.

Why alternative D is wrong:

Runoff is the movement of precipitated water on Earth.
Question 3
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In atmosphere, water droplets that are too heavy to float in air form

A
fog

B
clouds

C
lightning

D
precipitation

Solution

Precipitation is the process in which the condensed water present in clouds fall on Earth’s surface as rain, snow, hail, etc

The correct answer is D.

Why alternative A is wrong:

Fog is formed when tiny droplets of water are suspended in air at very low heights.

Why alternative B is wrong:

Clouds are formed by the condensation of water vapor present in atmosphere. The water droplets formed by condensation remain afloat in air in the form of clouds.

Why alternative C is wrong:

Lightning is the electrostatic discharge of clouds. It is the process in which charged clouds lose their electrical charge to the ground.
Question 4
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Use the following information to answer the next question.

In order to compensate the needs of the growing population, the people in a certain region cut down large areas of a surrounding forest.

Which of the following effects will not be seen in the region?

A
Climate change

B
Water pollution

C
Reduction in rainfall

D
Reduction in soil fertility

Solution

Water pollution occurs when contaminated water of industries, etc., is discharged into water bodies. The cutting down of trees does not result in water pollution.

The correct answer is B.

Why alternative A is wrong:

Trees use carbon dioxide for the process of photosynthesis. A reduction in the number of trees will lead to an increase in the concentration of carbon dioxide in the region. Carbon dioxide is a greenhouse gas. Thus, an increase in its concentration will lead to climate change.

Why alternative C is wrong:

Plants and trees release water vapors into the atmosphere by the process of transpiration. These vapors help in the formation of clouds. Hence, the cutting down of trees will reduce the amount of rainfall received by the region.

Why alternative D is wrong:

Plants help in keeping soil fertile by preventing the erosion of the fertile top soil. A reduction in the number of trees will lead to an increase in the erosion of the top soil. Thus, the cutting down of trees will result in a reduction in the fertility of the soil in the region.

Question 5

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Use the following information to answer the next question.

Global warming is a natural phenomena that acts very slowly and gradually. Earth’s temperature is increasing constantly and during the past century, an increase of approximately 1.3°F has already taken place. This increase in temperature is a result of the increase in the amount of greenhouse gases released into atmosphere.

Which of the following gases is not termed as a greenhouse gas?

Carbon dioxide

Water vapor

Nitrogen

Methane

Solution

Among the given gases, nitrogen is the only gas that does not act like a greenhouse gas.

The correct answer is C.

Why alternatives A, B and D are wrong:

Carbon dioxide, water vapor, and methane are all green house gases. They trap solar energy, which leads to an increase in the temperature of Earth. Hence, alternatives A, B, and D are incorrect.

Question 6

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Use the following information to answer the next question.

The ozone gas found in the atmosphere absorbs the ultraviolet radiation emitted by the sun. The concentration of ozone is the maximum between the altitudes of 10 km to 50 km in the atmosphere.

The concentration of ozone layer is the maximum in the

troposphere

stratosphere

mesosphere

exosphere

Solution

The layer of the atmosphere that extends from altitudes of 10 km to 50 km is known as the stratosphere. This atmospheric layer is rich in ozone and absorbs the major portion of ultraviolet radiation emitted by the sun.

The correct answer is B.

Why alternative A is wrong:

Troposphere is the atmospheric layer that is in contact with Earth’s surface. It extends up to 15 km. The concentration of ozone in this layer is very low.

Why alternative C is wrong:

Mesosphere is the third layer of the atmosphere from the surface of Earth and it does not contain ozone.

Why alternative D is wrong:

Exosphere is the outermost layer of the atmosphere from the surface of Earth. The air is extremely thin in concentration in this layer. It does not contain any ozone.