Currents, Waves, and Tides

Surface currents...

• occur below the surface of the water.
• occur above the surface of the water.
• occur on the surface of the water.
• All of the above.

Longshore currents flow...

• in a zig zag pattern.
• parallel to the shoreline.
• vertically to the shoreline.

Movement of energy through a body of water is a

• Tide

• current

• wave

• longshore drift

The development of a wave usually begins with

• currents

• wind

• gravity

• tsunamis

Waves caused by earthquakes or volcanic activity are called

• breakers

• rip currents

• longshore drift

• tsunamis

The rise and fall of Earth's waters on its coastlines are called

• currents

• tides

• waves

• gravity

There are two high tides and two low tides every

• every year

• approximately every 24 minutes

• approximately every 24 hours

• approximately every 12 hours

A large stream of water that moves through the ocean is called a

• longshore drift

• current

• tide

• wave

Surface currents are driven mainly by

• breakers

• tides

• global winds

• tsunamis

Which type of ocean movement is a repeated up and down motion, generally caused by wind?

• Current

• Wave

• Tide