Earth Science Chapter 7 Water

Plants transpire water through

• their roots

• their flowers

• their leaves

• the air

People can obtain groundwater by drilling a well

• into an aquifer.

• bove the water table

• into the unsaturated zone.

• into the impermeable layer.

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The energy for the water cycle originally comes from the _________

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A deep canyon in the ocean floor is called

• an abyssal plain

• a seamount

• a trench

• a continental shelf

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What causes cold , deep currents to form in the oceans near the poles?

• Sinking of dense cold water with high salinity

• the Coriolis Effect

• movement of a large mass of warm water across the Pacific

• sinking of cold freshwater from melting icebergs.

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Over many years, the levels of nutrients in a lake build up in the process of

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Deep currents are caused by differences in density of ocean water.

• True

• False, surface currents

• False, thermohaline conditions

• False, salinity

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What is the most abundant salt in sea water?

• magnesium chloride

• potassium chloride

• magnesium chloride

• sodium chloride

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The water in ponds and lakes is

• moving.

• deep.

• still.

• salty.

The movement of sand along a beach is known as _________ drift.