Currents, Tides, Waves

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

• current
• wave
• breaker

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

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

What is the distance from the trough of the wave to the crest?

• peak
• wave length
• wave height
• trough

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

Surface currents are driven mainly by

• breakers

• tides

• global winds

• tsunamis

The gravitational pull that the moon exerts on Earth is

• greater on solids than liquids

• the main cause of high and low tides

• responsible for longshore currents

• responsible for tsunamis

Which tide occurs at 1 and 3?

• low tide

• high tide

• long tide

• neap tide

Which of the following BEST explains why there are tides in Earth’s oceans?

• The rotation of Earth make the oceans bulge away from the planet

• Gravity from the moon and the sun pulls more on water at certain times

• The currents in the ocean change the depth of the water

• The sun makes the water in the ocean become warmer and expand