Oceans

What is the source of most waves on the ocean’s surface?

What ocean floor feature is pictured?

The amount of dissolved salts in ocean water is called the water’s

What is the main contribution the ocean gives to the atmosphere?

Long, flat area of the ocean floor?

Phytoplankton is an important source of atmospheric

Which would have the most impact on the climate of a city?

Seawater is typically denser than freshwater due to seawater's

Which of the following is not harmful to marine life?

Which part of the sea would be most difficult to explore due to pressure issues?

What ocean floor feature gives of warm, nutrient-rich water at the bottom of the ocean?

Ocean currents are caused by

Which is more dense: cold water or warm water?

An instrument that is used for determining the depth of the ocean floor is

What is featured at the center of the image?

The arrow is pointing to which ocean floor feature?

The fish population has decreased by which amount over the last 100 years?

What is created by erosion and deposition of sediment falling down the continental slope?

Which of the following will increase the salinity of the ocean?

Which of these would most likely occur as the ice caps melt?

What accounts for the largest amount of oil pollution in the oceans?

Trenches often occur near the shorelines. Trenches occur when

During glacial periods, the sea water level

Which ocean floor feature is pictured?

Mid-ocean ridges form at which type of boundary?