Water Pollution-STEM

What is pollution?

• Any substance that is introduced into the environment that can have harmful effects.

• Only substances that are natural.

• Only substances that are manmade.

• Substances that are always safe for the environment.

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

Pollution can be natural and isn't dangerous on its own but becomes pollution when there is too much in the environment or because it is in the ______ place.

• wrong

• right

• clean

• safe

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following is an example of a point source of pollution?

• Fertilizer from many farms

• A factory that dumps into a river

• Air pollution from cars

• Trash blown by the wind

Tags

NGSS.MS-ESS3-3

What is the main difference between point source and nonpoint source pollution?

• Point source pollution comes from a specific, identifiable place, while nonpoint source pollution comes from many places and is hard to regulate.

• Point source pollution is always more dangerous than nonpoint source pollution.

• Nonpoint source pollution is easier to control than point source pollution.

• Point source pollution only occurs in urban areas, while nonpoint source pollution only occurs in rural areas.

What is eutrophication?

• Eutrophication is a chain reaction where algae grows out of control due to excess nutrients, leading to a lack of oxygen in the water, which causes other animals to die and eventually fills the pond with sediment, causing it to dry up.

• Eutrophication is the process by which rocks are broken down into smaller pieces by wind and water.

• Eutrophication is the movement of water from the ground to the atmosphere through evaporation.

• Eutrophication is the process of plants converting sunlight into energy through photosynthesis.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Plastics are a large source of water pollution because they do not ______ (break down) like wood, metal, or paper items.

• biodegrade

• dissolve

• evaporate

• oxidize

Tags

NGSS.MS-PS1-3

Turbidity refers to the murkiness of water caused by pollution.

• True

• False

What are two examples of pollution that are not always harmful but can become pollution if they are in the wrong place or too much is present?

• Light and sound

• Water and soil

• Plastic and oil

• Carbon dioxide and methane

Tags

NGSS.MS-ESS3-3

Which of the following is an example of a point source of pollution?

• Discharge from a factory pipe, sewage treatment plant outlet, and oil spill from a tanker

• Runoff from agricultural fields, urban stormwater, and acid rain

• Wind-blown dust, vehicle emissions, and forest fires

• Pollen dispersal, volcanic eruptions, and ocean currents

Tags

NGSS.MS-ESS3-3

Which of the following are examples of nonpoint source pollution?

• Runoff from agricultural fields, urban stormwater, and acid rain

• Oil spills from ships, factory discharge pipes, and leaking underground tanks

• Sewage treatment plant effluent, landfill leachate, and industrial waste outfalls

• Household garbage, car exhaust, and plastic bottles in rivers

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4