Thermohaline circulation refers to the movement of ocean water in surface currents.

• True
• False

Upwelling causes a decrease in marine organisms where it occurs.

• True
• False

Waves break when they become too tall to be supported by their base.

• True
• False

Tsunami are caused only by earthquakes.

• True
• False

Adding salt to water makes it less dense.

• True
• False

Changes in temperature and salinity of ocean water take place on the ocean floor.

• True
• False

Rip currents are deep currents that pass close to shore.

• True
• False

Earth's rotation is responsible for the Coriolis effect.

• True
• False

The direction of surface currents is influenced by the shape of ocean basins.

• True
• False

The Gulf Stream raises London's average air temperature.

• True
• False