Motions of the Ocean

What keeps our oceans in constant motion and moves large amount of water distances.

• ocean currents
• ocean waves
• ocean fish
• the salt in oceans

Tides are caused by the gravitational pull of the __________ as well as the rotation of the earth.

• earth
• moon
• stars
• ocean floor

The __________ is the highest point of a wave.

• current
• crest
• tides
• breaker

_______________________________ are the periodic rising and falling of the surface of the ocean.

• TIdes
• Currents
• Waves
• Volcanoes

______________ is the number of waves that pass somewhere in a second. If the wavelength of a wave is increased the frequency will decrease.

• Frequency
• Mines
• Currents
• Crests

Sailors long ago would catch the current off the coast of Virginia. This current would help them get to _________________.

• a. South America
• b. Central America
• c. Europe
• d. Southern Africa

The cause of waves are by ________________________.

• differences in density
• the moon's gravitational pull
• winds blowing
• temperature and salinity

How are waves, tides, and currents alike __________________________.

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