I. Bodies of Water
1. The ocean circulates through currents, waves,
2. Currents act like rivers flowing through the ocean.
3. Waves are swells or ridges produced by winds.
4. Tides are the regular rising and falling of the
a. created by gravitational pull of the moon or
5. Motion of ocean helps distribute heat on the
a. winds are heated and cooled by ocean water.
B. Hydrologic Cycle
1. Hydrologic Cycle—cycle of water between
atmosphere, oceans, earth
C. Lakes, Rivers, and Streams
1. Lakes hold more than 95% of the earth’s fresh
2. Freshwater lakes, like the Great Lakes, are result of
3. Saltwater lakes form when outlet to sea is cut off:
a. streams and rivers carry salts into lake.
b. salts build up with nowhere to go.
4. Rivers and streams carry water to and from
larger bodies of water.
5. Tributaries are smaller rivers, streams that
feed into larger ones.
6. Drainage basin—area drained by river and
D. Ground Water
1. Ground water—water held in the pores of
2. Water table—level at which the rock is
1. Landforms are naturally formed features on
1. Continental shelf—sea floor from continent’s
edge to deep ocean.
2. Sea floor has ridges, valleys, canyons, plains,
3. Islands are formed by volcanoes, sand, or coral