Hydrosphere Unit Test

Which is the greatest impact of large quantities of sediment flowing into NC rivers and streams?

• sediment poisons fish

• sediment increases the temperature of rivers and streams

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Why does a cloudy river produce less plant life than a clear river?

• A cloudy river has few dissolved nutrients, while a clear river has many.

• A cloudy river prevents photosynthesis from occurring, while a clear river allows photosynthesis to occur in plants.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-4

Which aspect of water quality is most affected by changes in temperature?

• nitrates

• dissolved oxygen

Which factors can have the greatest effect on the health of a river system?

• nitrate levels and turbidity

• human consumption and ph

Tags

NGSS.MS-ESS3-4

Rainbow trout are found in mountain streams and are sensitive to changes in their habitat. Which would be the best description for the use of rainbow trout in water quality testing?

• bioindicator

• nitrates

When too much freshwater is extracted from an underground source in a coastal region, saltwater can seep into the aquifer, making is unusable. Which action reduces the risk of saltwater seeps into the aquifer through good stewardship of resources?

• building desalination plants to convert nearby saltwater to freshwater

• conserving water by reducing consumption in homes, schools and businesses

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

When is conservation of the water supply most urgent?

• when living in an area that has severe winters

• when living through a drought

Tags

NGSS.MS-ESS2-4

Which causes a decrease in the amount of dissolved oxygen in a lake?

• higher temperatures

• fertilizer runoff

Which best represents point source pollutants?

• acid rain and excess nutrients

• oil spills and factory discharge

The graph shows the distribution of the freshwater resources of Earth. Which of these sources of fresh water corresponds to Source 1?

• groundwater

• atmospheric water

• frozen water

• surface water

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1