test study guide earth science

what does evaporation do?(not looking for definition)

adds water to the atmosphere.

Desalination

allows saltwater to be used for drinking.

About 70% of earth's freshwater is found in?

glaciers and ice caps

Most freshwater is used for...?

industry and electrical power

deep ocean water is colder or warmer than surface ocean water?

colder

Adhesion describes water's attraction to...?

other substances

Is the oxygen side of a water molecule slightly positive or negative?

slightly negative

The water table?

the top of the saturated zone

Which of the following materials is the least porous? sorted or unsorted sand & rock?

unsorted sand & rock

The ocean's "global conveyor belt" is a...?

deep ocean current

Marvita lives near a river, but can't afford easy access to fresh water. She suffers from what type of scarcity?

economic scarcity

Most of Earth's fresh surface water is found in?

lakes

does water become more or less dense when it freezes?

less dense

most lakes were formed from?

melting glaciers

as ocean depth increases what four things happen?

1. temperature decreases 2. pressure increases 3. density increases 4. salinity increases

In Shoreville, the last low tide was at 12:00 a.m. About what time will the next high tide occur?

6:00am

the Coriolis effect causes surface currents to do what?

causes them to move in circular paths.

The salinity of the ocean is 35 ppt. The salinity of lake artemis is 12 ppt. is the ocean more or less saltier than lake artemis?

more saltier

Most of earths water contains what?

salt

Lorek lives near the north pole. The snow in his backyard adds water to the atmosphere through?

sublimation

thermohaline circulation is driven by differences in...?

temperature, salinity, and density

wavelength(diagram on a quiz)

the horizontal distance between two crest.

Surface currents are driven by?

the wind

the moon is the main cause of what?

tides

Confined aquifers are found between?

two layers at impermeable soil