of the Earth's surface is covered with water

is the largest ocean.

is the second largest ocean and is about half the volume of the Pacific Ocean.

is the third largest ocean.

is the smallest ocean whose surface is partly covered by ice.

is the ocean that extends from the coast of Antarctica to 60° south latitude.

sodium chloride.

salinity.

When water evaporates, dissolved salt is left behind.

climate, inflow of fresh water, water movement

is the second, cooler layer of the ocean.

surface zone.

deep zone.

Latitude and time of year

is the continuous movement of water from the ocean to the atmosphere to the land and back to the ocean.

is liquid water that has been heated by the sun and rises as a gas into the atmosphere.

is water vapor that cools and turns to liquid water on dust particles.

are droplets of water that fall back to Earth's surface.

absorb and hold energy from sunlight.

Sound navigation and ranging

Seasat

Geosat

is a map of the ocean floor that shows the ocean's depth.

is the region of the ocean that begins at the shoreline.

slopes from the continental shelf to the ocean floor.

forms the base of the continental slope.

is a large, flat, almost level area of the deep ocean basin that is covered in mud.

are long, undersea mountain chains that form along the floor of the major oceans.

seamounts.

are huge cracks in the deep-ocean basin where one oceanic plate has been pushed beneath another plate.

where they live and how they move.

are mostly microscopic organisms that drift freely near the ocean surface.

are free swimming organisms.

are organisms that live on or in the ocean floor.

is the region near the ocean floor and all the organisms that live on or in it.

is the shallowest zone of the benthic environment located between the low-tide and high-tide limits.

is the deepest benthic zone.

is the largest ecological zone of the ocean.

Neritic zone

Oceanic zone

is between the continental shelf and the abyssal plain.

is taking more fish that can be naturally replaced and reduces the fish population.

is a species of algae that are harvested from the ocean and used in a number of products.

are resources that are used up faster than they can be replenished.

are resources that can be replenished.

is the process of removing salt from ocean water.

is energy generated from the movement of the tides.

is a clean, renewable resource that is dependent on the constant motion of the ocean.

oil and natural gas.

is pollution that comes from many sources rather than from a single, specific site; this makes it difficult to trace. Point source pollution is pollution that comes from a specific site. Trash dumping is an example.

is the solid part of raw sewage.

By building ships with a double hull