CONVECTION

In convection, COOL air

• Rises
• Sinks

In convection, WARM air

• Rises
• Sinks

Warm air is __________ dense than cold air and rises creating convection currents.

• more
• less

Which picture shows material that is more dense?

• The picture of the left

• The picture on the right

What is an example of a convection current?

• Touching a hot spoon that was in a soup bowl.

• Feeling the suns rays on a nice summer day.

• Touching an iron skillet after cooking and feeling the heat.

• Movement of gas in a hot air balloon.

What causes wind?

• differences in air pressure

• differences in gravity

• difference in oxygen

• differences in the thermosphere

Why does warm air rise?

• Warm air is more dense than cooler air.
• Warm air has more pressure than cooler air.
• Warm air is less dense than cooler air.
• Warm air has a higher dew point than cooler air.

Air is warmer and less dense at the equator because the equator receives more____________________.

• wind

• solar radiation

• air pressure

• condensation

Where does the initial source of energy come from that creates winds?

• the moon
• the sun
• the Earth's surface
• the rotation of the Earth

Boiling Water

• Conduction

• Convection

• Radiation