Key 1
Key 2
Key 3
Key 4
Key 5
100

Surface currents are driven by

winds

100

Deep currents are caused by

differences in density of ocean water

200

Ponds and lakes form when water collects in hollows and __________ areas of land.

Low-lying

200

A river and all the streams and smaller rivers that flow into it together make up _______________.

river system

200

Most of earths surface water{roughly 97%}is salt water found in oceans. Only ___ % is found in fresh water.

3%

300

In the ocean _________ increases with depth.

Pressure

300

All living things need ______ in order to carry out their body processes

Water

300

Most waves form when ______ blowing across the water's surface transmit their ______ to the water.

1.winds 2.energy

300

a surface current ______ or _______the air above it, affecting the _________ of the land near the coast.

warms or cools
climate

300

In the ___________ ________, water moves between land, living things, bodies of water on earths surface, and the atmosphere.

Water Cycle

400

People can obtain groundwater from an _______by drilling a well below the water table.

Aquifier


400

Waves shape a beach by ____ the shore in some places and _____ it up in other places

1.eroding 2.building

400

Natural processes and human activities can cause lakes to ________

Disappear

400

Water ________ trickles down between particles of soil and through cracks and spaces in layers of rock.

Underground

500

Major ocean floor features include ___________, the continental shelf, the continental _________, the abyssal plain, and the mid-ocean _________

trenches, the continental shelf, the continental slope, the abyssal plain, and the mid-ocean ridge

500

They move and mix _______ around the world and carry cold water form the _______ toward the _________

Water
Poles
Equator

500

The water in earths oceans varies in ______, ________, and ________.

Salinity, temperature, depth 

500

Ocean surface temperatures vary with __________ and the ___________.
The water temp. _________ with increasing depth.

Location and the seasons
Decreases

500

Near shore wave height ____ and wave length _____.

1.increases 2.decreases

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