Oceans

The total amount of dissolved salts in a sample of water is its

• strength
• salinity
• pressure
• effect

Surface currents are caused mainly by 

• prevailing winds
• tsunamis
• earthquakes
• upwelling

The ______________ ocean is the largest ocean.

• Indian
• Atlantic
• Pacific
• Artic

The Arctic ocean is the ______________ ocean on Earth.

• largest
• warmest
• fishiest
• smallest

Deep ocean currents are ___________.

• light
• mythical
• warm
• cold

A factor that affects the density of ocean currents is 

• salinity
• time
• atmosphere
• eclipses

A ___________________ is an underwater vehicle built of materials that resist pressure.

• gyre
• submersible
• zone
• seamount

_____________________ brings up tiny ocean organisms and nutrients from the deeper layers of the water.

• Earthquakes
• Tsunamis
• Upwelling
• Trenches

Currents affect climate by cooling or warming the _________________ above it.

• sun
• shelf
• plain
• atmosphere

There are _______________ oceans in the world.

• five
• three
• ten
• two