Ocean Waves, Tides, and Currents Test

Front

In the northern hemisphere, gyres rotate ____________, while in the southern hemisphere, gyres rotate ____________.

Back

Clockwise; Counterclockwise

Front

The constant movement of water in a river or ocean is called ____________.

Back

currents

Front

The ocean makes up about ________ % of the Earth's surface.

Back

70 %

Front

Which of the following is NOT a cause of ocean currents?

Back

ocean pollution

Front

Spring tides and neap tides occur in patterns governed by ____________.

Back

phases of the moon

Front

What are ocean currents?

Back

Large-scale movements of water in the ocean, driven by wind, temperature, and salinity differences.

Front

What is the difference between waves and currents?

Back

Waves are surface movements caused by wind, while currents are continuous flows of water.

Front

What causes tides?

Back

The gravitational pull of the moon and the sun on Earth's oceans.

Front

What is a gyre?

Back

A large system of rotating ocean currents, typically driven by wind.

Front

How do temperature differences affect ocean currents?

Back

Warm water is less dense and rises, while cold water is denser and sinks, creating movement.