Oceanography - Grade 8

Does the Gulf Stream change the climate?

• Yes

• No

• Maybe

How does the Gulf Stream affect weather conditions along the eastern coast of the United States?

• The Gulf Stream causes temperatures to decrease

• The Gulf Stream causes temperatures to increase.

• The Gulf Stream causes more overcast skies.

Ocean water contains stream-like movements of water called _____________ _____________.

• ocean current

• ocean temperature

• surface currents

• deep current

The density of ocean water is affected by temperature and ___________.

• salinity

• depth

• volume

Does the moon have an affect on tides?

• True

• False

High tides and low tides each happen _____ times per day.

• 1

• 4

• 2

• 8

What type of tide happens when the moon is in the full moon phase?

• spring tide

• low tide

• neap tide

• high tide

What carries out most of Earth's photosynthesis?

• currents

• waves

• phytoplankton

• wind

How much of the Earth is covered in water?

• 10%

• 70%

• 90%

• 60%

Ocean currents are caused by-

• underwater earthquakes

• The sun and moon

• Density differences

• Boats