Practice EEN NCFE

1.

Which statement best describes the motion of Earth around the sun?

• Speed increases the closer Earth is to the sun and decreases the farther it is from the sun.

• The speed of Earth is constant regardless of its distance from the sun.

• Speed increases the farther Earth is from the sun and decreases the closer it is to the sun.

• The speed of Earth is constant because the distance remains the same between Earth and the sun.

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2.

Which best describes the relationship between carrying capacity and Earth’s resources?

• A population that is above the carrying capacity will experience an increase in plant production.

• A population that is above the carrying capacity will have a decrease in natural resources.

• A population that is below the carrying capacity will have an increase in contagious diseases.

• A population that is below the carrying capacity will experience a decrease in freshwater resources

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3.

How could the exponential growth of the human population impact regions throughout the world?

• It could lead to a decrease in the demand for land within the regions.

• It could lead to an increase in the biodiversity of the regions.

• It could lead to an increase in the demand for food in the regions.

• It could lead to a decrease in the amount of pollution in the regions.

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4.

If it is summer in the northern hemisphere, which statement is true?

• It is summer in the southern hemisphere due to the tilt of Earth’s axis.

• Earth has reached its closest point to the sun due to its revolution.

• It is winter in the southern hemisphere due to the tilt of Earth’s axis

• Earth has changed the tilt of its axis by 20 degrees due to its revolution.

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5.

Which could most likely have a lasting negative impact on the biodiversity of an area?

• a reduction in the use of fertilizers

• selective cutting

• an increase in plant populations

• clear-cutting

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6.

How does a straight alignment between Earth, the sun, and the moon impact the tides on Earth?

• It produces diurnal tides

• It produces semidiurnal tides.

• It produces the least change in high and low tides.

• It produces the greatest change in high and low tides

7.

Which describes the difference between nuclear fission and nuclear fusion?

• Nuclear fission produces the energy in the core of Earth, and nuclear fusion produces energy in nuclear power plants.

• Nuclear fission is the process that produces the radiant energy of stars, and nuclear fusion splits a heavier nucleus into smaller nuclei

• Nuclear fission splits a heavier nucleus into smaller nuclei, and nuclear fusion is the process that produces the radiant energy of stars.

• Nuclear fission produces energy in nuclear power plants, and nuclear fusion produces the energy in the core of Earth.

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8.

Kudzu, a vine covering many acres of North Carolina, was introduced to the United States in 1876 to control erosion. Over the years, scientists found that kudzu creates problems by growing rapidly and preventing other plants from getting sunlight. Which best describes kudzu?

• a noncompetitive species

• an invasive, nonnative species

• an agent of erosion

• an abiotic factor

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9.

How does heat from the sun get to Earth?

• by radiation, using electromagnetic waves to transfer the heat

• by convection, using liquids and gases to transfer the heat

• by conduction, using solids to transfer the heat

• by absorption, using primary waves to transfer the heat

10.

Why do green plants require solar energy?

• to decompose the dead or decaying remains of animals

• to release carbon dioxide into the atmosphere

• to produce their own food

• to absorb nitrogen into their roots

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