Currents Waves 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 the lowest point of a wave called?

• crest
• trough
• breaker
• peak

At low tide there is _____.

• less beach
• more water
• higher water
• more beach

What is a tsunami?

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

How are waves, tides, and currents alike?

• Always moving, affect the shape of the shoreline
• Affect the shape of the shoreline & are caused by wind
• Affect the shape of the shoreline & are caused by tsunamis
• Always moving & affected by gravity

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.

What is the highest point of a wave called?

• the top
• peak
• crest
• trough

What is the same about density currents and surface currents?

• circular flow
• caused by temperature
• generated by wind
• direction is altered by landforms in their path