NC Science

Which percentage represents the amount of Earth’s water that is found in oceans?

• 3%

• 7%

• 97%

Tags

NGSS.MS-ESS2-4

If a newly discovered fish species is found to live in mildly acidic water, which is the best estimate of the pH range for the water?

• 0–2

• 5–6

• 7–8

• 13–14

Tags

NGSS.MS-PS1-2

Which is one way people can help prevent the pollution of lakes and rivers?

• by controlling soil erosion around lakes and rivers

• by clearing land around lakes and rivers to build homes

• by limiting the amount of fish caught in lakes and rivers

• by creating hiking and biking trails along lakes and rivers

Tags

NGSS.MS-ESS3-3

Where does all water on earth eventually flow?

• oceans

• ponds

• river

Tags

NGSS.MS-ESS2-4

Which is the most important reason for maintaining clean water?

• Energy cannot be generated without water

• Organisms cannot live and grow without water

• Goods cannot be transported easily without water

• People cannot maintain proper hygiene without water

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which is the most important reason why findings of water quality studies need to be communicated to policy makers?

• so laws can be enacted to protect the hydrosphere

• so policy makers will begin to conserve water personally

• so laws protecting the environment can have fewer penalties

Tags

NGSS.HS-ETS1-3

Which is an action people can take to protect the water supply?

• Turn off faucets while brushing teeth

• Continue to run water while washing dishes

• Pour cooking oil down kitchen drains after cooking

• Water outside plants during the middle of the day

Which best describes the water distribution in an estuary?

• The saltwater is closer to the surface than the freshwater

• The freshwater is closer to the surface than the saltwater

• The saltwater is found closer to the bank, and the freshwater is found closer to the center

• The freshwater is found closer to the bank, and the saltwater is found closer to the center

Which would lead to the greatest reduction of dissolved oxygen in a lake?

• decreased number of fish in the lake

• increased number of fish in the lake

• increased nutrients and algal blooms

• decreased number of plants surrounding the lake

Tags

NGSS.MS-LS2-3

Which factor most affects how water drains into local watersheds?

• evaporation

• precipitation

• differences in elevation

Tags

NGSS.MS-ESS2-4