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WATER CYCLE

THE CONSTANT RECYCLING OF
WATER ON EARTH

EVAPORATION

THE PROCESS IN WHICH A LIQUID
CHANGES TO A GAS

CONDENSATION

THE PROCESS BY WHICH WATER VAPOR
CHANGES FROM A GAS TO A LIQUID

PRECIPITATION

WATER THAT FALLS TO EARTH AS
RAIN, SNOW, SLEET, OR HAIL

WAVE

AN UP-AND-DOWN MOVEMENT
OF WATER

STORM SURGE

A VERY LARGE SERIES OF WAVES
CAUSED BY HIGH WINDS OVER A
LARGE AREA OF OCEAN

TIDE

THE DAILY CHANGES IN THE LOCAL
WATER LEVEL OF THE OCEAN

DEEP OCEAN CURRENT

AN OCEAN CURRENT FORMED WHEN
COLD WATER FLOWS UNDERNEATH
WARM WATER

SURFACE CURRENT

AN OCEAN CURRENT FORMED WHEN
STEADY WINDS BLOW OVER THE
SURFACE OF THE OCEAN

SHORE ZONE

THE PLACE WHERE LAND AND
OCEAN MEET

CONTINENTAL SHELF

THE OCEAN FLOOR OF THE
SHORE ZONE

ABYSSAL PLAIN

HUGH FLAT AREAS OF OCEAN FLOOR
THAT ARE COVERED WITH THICK
LAYERS OF SEDIMENT

TRENCH

VALLEYS THAT FORM ON THE OCEAN
FLOOR WHERE TWO PLATES COME
TOGETHER; THE DEEPEST PLACES
IN THE OCEANS

MID-OCEAN RIDGE

A VAST CHAIN OF MOUNTAINS THAT
RUNS ALONG THE CENTERS OF
EARTH'S OCEANS

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