Key 1
Surface currents are driven by
winds
Deep currents are caused by
differences in density of ocean water
Ponds and lakes form when water collects in hollows and __________ areas of land.
Low-lying
A river and all the streams and smaller rivers that flow into it together make up _______________.
river system
Most of earths surface water{roughly 97%}is salt water found in oceans. Only ___ % is found in fresh water.
3%
In the ocean _________ increases with depth.
Pressure
All living things need ______ in order to carry out their body processes
Water
Most waves form when ______ blowing across the water's surface transmit their ______ to the water.
1.winds 2.energy
a surface current ______ or _______the air above it, affecting the _________ of the land near the coast.
warms or cools
climate
In the ___________ ________, water moves between land, living things, bodies of water on earths surface, and the atmosphere.
Water Cycle
People can obtain groundwater from an _______by drilling a well below the water table.
Aquifier
Waves shape a beach by ____ the shore in some places and _____ it up in other places
1.eroding 2.building
Natural processes and human activities can cause lakes to ________
Disappear
Water ________ trickles down between particles of soil and through cracks and spaces in layers of rock.
Underground
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
They move and mix _______ around the world and carry cold water form the _______ toward the _________
Water
Poles
Equator
The water in earths oceans varies in ______, ________, and ________.
Salinity, temperature, depth
Ocean surface temperatures vary with __________ and the ___________.
The water temp. _________ with increasing depth.
Location and the seasons
Decreases
Near shore wave height ____ and wave length _____.
1.increases 2.decreases