Ocean Currents

The main cause of thermohaline currents is

• wind

• earthquakes

• density

• pressure

Which is not true about salty water?

• Floats on top of freshwater

• Higher density

• It has more molecules than freshwater

• It sinks at the bottom of a container

What does the blue line represent in the Thermohaline circulation?

• Warm salty water

• Warm water

• Cold water

• Cold salty water

Which pictures shows the correct "Global Conveyor Belt"?

• 
• 
• 
• 

Which of the following types of water would SINK the fastest?

• warm and salty

• cold and salty

• warm and fresh

• cold and fresh

Oceans cover about ______ of the surface of the earth.

• 60%

• 70%

• 80%

• 90%

The following are the oceans according to size

• Pacific, Atlantic, Indian, Arctic, Antarctic

• Pacific, Indian, Atlantic, Arctic, Antarctic

• Atlantic, Pacific, Indian, Antarctic, Arctic

• Pacific, Atlantic, Indian, Antarctic, Arctic

Smaller bodies of salt water are called

• seas

• lakes

• oceans

• rivers

The deepest parts of the ocean are called

• trenches

• abyss

• deep sea plain

• guyot

Two types of ocean currents are

• local and global
• sea and land
• surface and deep
• warm and cold