Hydrosphere Unit Review

Sea otters consume sea urchins, which in turn thrive in kelp forests off the coast of California. These underwater forests depend on cold water. Which would yield the most stable ecosystem for sea otters?

• underwater volcanoes

• hurricane activity

• upwelling

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

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

• 3%

• 71%

• 97%

What most often causes the availability of water to change?

• local geography

• type of plants

• type of soil

Tags

NGSS.MS-ESS3-1

Which has the greatest long-term impact on local water availability?

• runoff

• climate

• pollution

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-6

NGSS.MS-ESS3-1

Where would the safest and least polluted water most likely occur?

• aquifer

• large river

• mountaintop snow

In which ocean zone is ocean temperature most affected by the weather?

• deep zone

• polar zone

• surface zone

• transition zone

Tags

NGSS.MS-ESS2-5

Which organism is at the base of a marine food web?

• crab

• phytoplankton

• whale

• zooplankton

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

To which condition do all species in the ocean depths have to adapt?

• lower salinity

• extreme pressure

• swift ocean currents

• hot water temperature

Which technique uses sound waves to measure the depth of the ocean floor?

• global positioning system

• radar

• sonar

Which dissolved gas is added to ocean water as a result of photosynthesis?

• oxygen

• nitrogen

• carbon dioxide

Tags

NGSS.MS-LS1-6