Oceans Chapter 11

What is salinity?

• the amount of sodium in liquid
• the amount of water that has evaporated
• the amount of dissolved salts in a liquid
• the amount of solids in a liquid

What do scientist use sonar technology for?

• to help scuba divers
• to talk to whales
• to find out the ocean's depth
• to predict the weather

The process of removing salt from ocean water is called?

• Desalination
• Non-Point Source
• Point Source
• NonRenewable

The major cause of surface waves in the ocean is —

• Earthquakes
• Rain
• Wind
• Gravity

Oceanographers of the 21st century use which tool to determine the depth of ocean  basins? 

• Radar
• Sonar
• Depth gauge
• Radiometer

Seawater is typically denser than freshwater due to seawater’s —

• Greater depth
• Lower freezing point
• Smaller mass
• Higher salinity

The main cause of ocean salinity is...

• Weathering and erosion of rocks on land
• Metamorphism
• Continental volcanism
• CO₂ emissions

What causes ocean currents in the Northern Hemisphere to curve to the right?

• Earth's orbit around the Sun
• Earth's spinning on its axis
• Earth's magnetic field
• Earth's force of gravity

A[n] ______________ tide occurs when the sun is at right angles to the line between Earth and the moon. 

• high
• neap
• low
• spring

Differences in the moon's and sun's pull on different sides of the Earth cause _________.

• gravity
• lunar phases
• tides
• dabbing