Unit 2 review

How do most pollutants get into our watershed?

• Factories dump pollution into creeks and rivers

• Runoff from heavy rain carries it into creeks and rivers

• Oil spills leak into creeks and rivers

Answer explanation

Most pollutants enter watersheds through runoff from heavy rain, which carries contaminants from streets, fields, and other surfaces into creeks and rivers. This process is a significant source of water pollution.

Tags

NGSS.MS-ESS3-3

Why should we be concerned with runoff water from neighborhood and city streets that goes into storm drains?

• It can host alligators and other dangerous animals

• It can get into water pipes and flood houses and businesses

• It isn't filtered or cleaned and empties directly into creeks

Answer explanation

Runoff water from streets isn't filtered or cleaned, leading it to flow directly into creeks. This can introduce pollutants and harmful substances into local waterways, affecting ecosystems and water quality.

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

How could liquid pollution on the surface often end up polluting the groundwater deep underground?

• It can percolate through the soil and reach the groundwater

• Strong winds can blow it into the cracks of rocks

• It can enter the water cycle and go into caves

Answer explanation

Liquid pollution can percolate through the soil, which allows it to seep down and contaminate the groundwater. This process is a primary way surface pollutants reach underground water sources.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

How could an underground storage tank that stores gasoline accidentally pollute the groundwater?

• The tank or its pipes could crack and leak, and gas can percolate down to the groundwater

• Gas that is pumped out can drip onto the concrete and get washed away by rain runoff

• Gas fumes from the tank can leak out and get into the air

Answer explanation

The correct choice explains that if the underground tank or its pipes crack, gasoline can leak and percolate down to the groundwater, leading to contamination. This is a direct pathway for pollution.

Tags

NGSS.MS-ESS3-3

Deforestation causes an increase in atmospheric carbon dioxide

• true

• false

Answer explanation

Deforestation leads to fewer trees that absorb carbon dioxide. As trees are cut down, the carbon stored in them is released into the atmosphere, increasing carbon dioxide levels. Therefore, the statement is true.

Tags

NGSS.HS-ESS2-6

NGSS.HS-ESS3-6

what is the leading cause of deforestation?

• Diseases 

• Housing market

• Agriculture and Farming

• Paper mill

Answer explanation

The leading cause of deforestation is agriculture and farming, as land is often cleared for crops and livestock. This practice significantly contributes to forest loss compared to other factors like diseases or the housing market.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

Deforestation has an affect on the water cycle

• true

• false

Answer explanation

True. Deforestation disrupts the water cycle by reducing transpiration and altering precipitation patterns, leading to changes in water availability and quality.

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-4

What is the main cause of air pollution?

• plowing fields and releasing dust

• using solar power

• burning fossil fuels

• using water power

Answer explanation

The main cause of air pollution is burning fossil fuels, which releases harmful pollutants into the atmosphere. Other options like using solar or water power are clean energy sources that do not contribute to air pollution.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

What is the major cause of photochemical smog?

• burning of fossil fuels

• car exhaust

• CFC's in the atmosphere

• fertilizer use

Answer explanation

Car exhaust is a major contributor to photochemical smog, as it releases nitrogen oxides and volatile organic compounds that react in sunlight, forming harmful ozone and other pollutants.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

How can acd rain affect non-living objects?

• speeds up the erosion process

• eats away paint from surfaces

• leeches nutrients from the soil

• all of the above

Answer explanation

Acid rain can speed up erosion of rocks, eat away paint from surfaces, and leach nutrients from the soil. Therefore, it affects non-living objects in multiple ways, making 'all of the above' the correct choice.

Tags

NGSS.MS-ESS2-2