How might clear cutting an entire forest impact the water quality in a nearby river?

• Muddy rainwater would wash into the river, increase the turbidity and make it easier for plants to do photosynthesis

• Muddy rainwater would wash into the river, decrease the turbidity and make it more difficult for plants to do photosynthesis

• Muddy rainwater would wash into the river, increase the turbidity and make it more difficult for plants to do photosynthesis

• Clear cutting the forest would have no real impact on a nearby river

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Sam noticed that when he added a cleaning chemical into his fish tank, the pH began to increase. After 3 hours, the pH had risen from 7.1 to 8.0. The nitrate level also increased from .5 to 3.0. What could Sam conclude about the chemical he added to the tank?

• the chemical was an acid, and it can decrease the nitrate pollution in the water

• the chemical is an acid, and it can increase the nitrate pollution in the water

• the chemical is a base, and it can decrease the nitrate pollution in the tank

• the chemical is a base, and it can increase the nitrate pollution in the tank

Tags

NGSS.MS-PS1-2

A temperature increases in a certain body of water leading to a decrease in the amount of dissolved oxygen in the water. What outcome could we expect to see as a result of this?

• Native species of fish will begin to increase in numbers

• Native plants and animals will begin to decrease in numbers

• The water turbidity will decrease

• The water will begin to recede back into the ocean

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Catawba County starts a new policy that includes the following:

requires buildings to use automatic faucets, regulates how people maintain their car to ensure no motor oil leaks into parking lots or roadways, and requires water quality monitors to be placed in all water ways. What are the policies an example of?

• reusing, because people are encouraged to reuse the water

• unfair laws, because the county is telling people what to do

• stewardship, because the county is monitoring and protecting our water supply

• recycling, because the people are asked to use less water

Tags

NGSS.MS-ESS3-3

Presence of fecal coliform bacteria suggests that

• a factory polluted the river

• a nearby treatment plant added chlorine to the waste water

• the water is safe for drinking

• untreated animal waste contaminated the water

Tags

NGSS.MS-LS1-5