Waves, Currents, Tides

A _____ is a transfer of energy from one water molecule to the next.

• current
• wave
• breaker

Describe surface currents.

• Currents that occur on the surface of the water.
• Currents caused by prevailing winds.
• Currents caused by water molecules moving in a circular pattern.
• Both A & B

What causes waves?

• ice and wind
• winds and currents
• currents and tides
• wind and tide changes

What is a tsunami?

• a wave direction
• a type of current
• a sand particle
• a giant sea wave

Density currents are caused by...

• density differences caused by temperature & salinity. 
• changes in wind directions.
• prevailing winds.

The development of a wave usually begins with

• currents

• wind

• gravity

• tsunamis

Movement of energy through a body of water is a

• Tide

• current

• wave

• longshore drift

Tides are caused by the interaction and influence of

• the Earth

• the Sun

• the Moon

• gravity

• wind

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