1.
What causes convection currents to form in the ocean?

Differences in water density

Differences in water depths

Differences in water quality

2.
Which of the following is an example of heat transfer through convection?

Feeling heat from a campfire

smoke rising from a volcano

A metal spoon getting warm from being in hot water

3.
In which direction does heat always flow?

From a larger object to a smaller object

From a cooler object to a warmer object

From a smaller object to a larger object

From a warmer object to a cooler object

4.
Which of the following is the best description of convection?

Heat transfer between two objects that are touching

Heat transfer through movement in fluids

Heat transfer through empty space

80 points. 20 points each question.