12.1 Earth's Oceans
The third largest ocean
Indian Ocean
The largest ocean
Pacific Ocean
What is happening as the rivers and streams flow toward the oceans?
Rivers and streams dissolve minerals from rocks and soil, which they carry to the ocean.
71%
The amount of the earth's surface that is covered in water
Water cycle
The continuous movement of water from the ocean to the atmosphere to the land and back to the ocean.
At this level, the ocean water is very cold and dense; it moves slowly across the ocean floor and forms deep ocean currents
deep zone
deep zone
deepest layer of ocean water
The term that refers to all the oceans on Earth and what divides it into five parts
global ocean, divided into five parts by the continents
thermocline
layer just beneath the surface zone
Salt is called...
sodium chloride
At this level, ocean water temperature is fairly uniform. The ocean water is heated by energy from the sun, convection currents form as heated, less dense water rises above the cooler, denser water.
surface zone
surface zone
top layer of ocean water
salinity
A measure of the amount of dissolved salts in a given amount of liquid
The ocean that extends from the coast of Antarctica to 60*S latitude
Antarctic Ocean also called Southern Ocean
The smallest ocean
Arctic Ocean
The second largest ocean
Atlantic Ocean
Parts of the ocean along the equator...
... are warmer because they receive more direct sunlight per year than areas closer to the poles.
Coastal water in cooler, more humid places...
... have a lower salinity.
Coastal water in places with hotter drier climate...
...have a higher salinity.
Parts of the water cycle
1. Evaporation, 2. Condensation, 3. Precipitation.
The five oceans
1. Pacific, 2. Atlantic, 3. Indian, 4. Arctic, 5. Antarctic also called the Southern.
Temperature zones in the ocean
1. Surface zone, 2. Thermocline, 3. Deep zone.