EarthSci_S2_U2 Part 2

The rhythmic rise and fall of ocean water twice in a day is called

• Ocean current

• tide

• Wave

If sun, moon and earth is in the same line then which tide is caused ?

• Neap

• Spring

• High tide

When the moon is in its first and last quarter then which tide is caused?

• Neap tide

• Low tide

• High tide

______ causes deep ocean currents

• The Coriolis Effect

• gravity

• wind

• density differences

______ causes surface currents.

• The Coriolis Effect

• gravity

• density differences

• wind

Decreasing ocean temperature causes the density of the water to ______.

• decrease

• increase

• stay the same

• fluctuate

The Gulf stream carries _____________ water from the east coast of The United States to the West coast of Europe.

• Cold
• Warm 
• Freezing
• Fresh

What is the flat land located on either side of the mid-ocean ridge?

• continental slope
• continental shelf
• abyssal plain
• ocean basin

A guyot has a flat top due to

• Swift ocean currents
• Weathering and erosion when it was an island
• Bioerosion over time
• The density of the rock it's made out of

This is used to map the ocean floor.

• sonar

• radar

• Nansen bottle

• lead line