Q4 Topics 7-9 Study guide 2

As Earth’s population continues to grow, the need for resources also increases. Certain necessary resources will not last unless people begin using less of them. The practice of using less of a resource to keep it around for a longer time is called __________.

• conservation

• pollution

• erosion

• extinction

Answer explanation

The correct answer is 'conservation' because it refers to the practice of using fewer resources to ensure their availability for the future, which is essential as Earth's population grows and resource demand increases.

Tags

NGSS.MS-ESS3-4

Changing the flow of water, such as filling in a wetland for development, impacts the environment by

• increasing desertification

• increasing flooding and pollution

• decreasing erosion

• decreasing nutrient depletion

Answer explanation

Changing water flow by filling wetlands can lead to increased flooding and pollution. Wetlands naturally absorb excess water and filter pollutants, so their loss disrupts this balance, resulting in more flooding and higher pollution levels.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Deonte's family is considering using solar power. What environmental problems come from using fossil fuels? Choose the two that apply.

• burns very hot

• nonrenewable

• contributes to greenhouse effect

• expensive

Answer explanation

Fossil fuels are nonrenewable, meaning they will eventually run out. Additionally, their use contributes to the greenhouse effect, leading to climate change and environmental degradation.

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

Reducing the use of fossil fuels would have what kind of impact on the environment?

• Negative impact

• No impact

• Positive impact

• Uncertain impact

Answer explanation

Reducing fossil fuel use leads to lower greenhouse gas emissions, improving air quality and mitigating climate change. This results in a positive impact on the environment, making 'Positive impact' the correct choice.

Tags

NGSS.HS-ESS3-4

NGSS.HS-ESS3-5

NGSS.HS-ESS3-6

Which energy source is associated with high carbon dioxide emissions?

• Alternative energy sources

• Fossil fuels

• Both A and B

• Neither A nor B

Answer explanation

Fossil fuels, such as coal, oil, and natural gas, are known for high carbon dioxide emissions when burned for energy. In contrast, alternative energy sources like wind and solar produce little to no emissions.

Tags

NGSS.MS-ESS3-5

What is the environmental impact of using nonrenewable resources?

• Positive

• Negative

• No impact

• Uncertain

Answer explanation

The environmental impact of using nonrenewable resources is negative, as it leads to pollution, habitat destruction, and depletion of natural resources, contributing to climate change and ecological imbalance.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

After viewing the graph of World Population Growth, Chen notices a change that happened over the past few decades. She knows there is a reason for this change. What is this kind of change called?

• birth rate

• exponential growth

• population constraint

• overpopulation

Answer explanation

The change Chen notices in World Population Growth is called exponential growth. This term describes how populations can increase rapidly over time, especially when resources are abundant, leading to significant increases in numbers.

Tags

NGSS.MS-ESS3-4

Which of the following is directly involved in transforming the remains of organisms into fossil fuels?

• Pressure

• Wind

• Sunlight

• Precipitation

Answer explanation

Pressure is crucial in the formation of fossil fuels, as it compresses organic remains over millions of years, transforming them into coal, oil, and natural gas. Other options like wind, sunlight, and precipitation do not play a direct role.

Tags

NGSS.MS-ESS3-1

Which oil spill cleanup method uses chemicals to break the surface oil apart into small droplets?

• Burning

• Dispersing

• Skimming

• Absorbing

Answer explanation

The dispersing method uses chemicals to break down surface oil into small droplets, allowing it to mix with water and degrade more easily. This is why 'Dispersing' is the correct answer.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ETS1-3

Which method is likely to be ineffective in cold water conditions?

• Burning

• Dispersing

• Skimming

• Absorbing

Answer explanation

Dispersing is likely ineffective in cold water because lower temperatures can hinder the dispersion of substances, making it less effective compared to methods like skimming or absorbing.