Midterm Review - Oceans and Atmosphere

Ocean currents are caused by-

• underwater earthquakes
• human influence
• sun moon and Earth interaction
• density differences

Seawater is typically denser than freshwater due to seawaters-

• greater depth
• smaller mass
• higher salinity
• lower freezing point

What part of the ocean floor would be the most difficult to explore due to pressure?

• continental slope
• sea mount
• trench
• abyssal plain

What part of the ocean floor would be most affected by sea level change?

• abyssal plain
• continental shelf
• continental slope
• trench

The density of ocean water depends on what two factors?

• temperature and global winds
• temperature and nutrients
• salinity and upwelling
• salinity and temperature

A horizontal movement of ocean water that is caused by wind and that occurs at or near the ocean’s surface is called:

• ocean current
• deep current
• convection current
• surface current

Cold , deep ocean water is likely to

• be full of ocean life

• have low salinity

• have high salinity

• freshwater

What is letter C?

• Mid-Ocean Ridge
• Cont. Shelf
• Cont. Slope
• Abyssal Plain

What is letter D?

• Cont. Shelf
• Mid-Ocean Ridge
• Volcanic Island
• Seamount

What is letter E?

• Volcanic Island
• Seamount
• Mid-Ocean Ridge
• Abyssal Plain