ESS 2.1

Seawater becomes less dense with a(n) ______________________ in temperature and a(n) __________________ in salinity.

• increase; decrease

• decrease; increase

• increase; increase

• decrease; decrease

Tags

6.ESS2.1

Use the labeled map and your knowledge about how the sun's energy heats the Earth, and select the best statement.

• Surface currents 3 and 4 are cold water currents

• Surface currents 2 and 5 are warm water currents

• Surface currents 1 and 6 are cold water currents

• Surface currents 1 and 6 are warm water currents

Tags

6.ESS2.1

Ocean currents move large amounts of water all over the planet.  What is the main energy source for these ocean currents?

• tidal effects of the moon

• heat from Earth's core

• radiation from the sun

• the motion of tectonics plates

Tags

6.ESS2.1

Ocean currents affect global climates. The Great Ocean Conveyor Belt is shown. Which is most likely the mechanism that drives the current to continue to circulate?

• surface winds

• density currents

• rotation of Earth

• gravity of the moon

Tags

NGSS.MS-ESS2-6

NGSS.MS-ESS2-4

Which of the following events along the west coast of the United States provides direct evidence that upwelling brings nutrient-rich waters to the surface?

• an increase in fisheries production during upwelling

• a decrease in larval fish populations during upwelling

• an increase in algae and phytoplankton during upwelling

• a decrease in surface water temperatures during upwelling

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Which answer choice correctly describes global heat convection?

• Cold air rises from the equator towards the poles, because warm air rises and cold air sinks

• Warm air rises from the equator towards the poles, because warm air rises and cold air sinks

• Cold air rises from the equator towards the poles, because cold air rises and warm air sinks

• Warm air rises from the equator towards the poles, because cold air rises and warm air sinks

Tags

NGSS.MS-ESS2-6

NGSS.MS-ESS2-5

Which factor causes the motion of surface ocean currents?

• the sun

• the wind

• the moon

• hurricanes

Tags

NGSS.MS-ESS2-6

What is the main energy source for deep ocean currents that move large volumes of water around the planet?

• heat from Earth's core

• radiation from the sun

• tidal effects of the moon

• motion of tectonic plates

Tags

NGSS.MS-ESS2-6

Solar radiation provides more heat near the equator than near the poles on Earth. The greatest amount of heat is moved away from the equator by

• ocean currents

• aquatic plants

• surface winds

• tectonic plates

Tags

NGSS.MS-ESS2-6

Which of the following 2 answers correctly describes density?

• Cold water has less density than warm water

• Warm water has less density than cold water

• Water has more density if there is more salt

• Water has more density if there is less salt