Heat and Temperature Pt 1

Which best describes CONDUCTION?

• When heat is transferred from objects like rays of light or electromagnetically.
• a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
• When heat transfers from objects that are touching.
• When heat transfers through the heater or AC in your house.

Which best describes CONVECTION?

• When heat transfers through waves.
• When heat transfers from objects that are touching.
• movement in a gas or liquid in which the warmer parts move up and the colder parts move down
• Heat traveling from the sun

What kind of heat transfer is occurring when the sun warms the sand?

• Conduction
• Radiation
• Convection
• Density

Which is an example of convection?

• A hair dryer is drying up your hair.
• A pan getting hot from a hot stove.

• The concrete getting hot on a sunny day.

• 

What heat transfer happens to your hand when you touch a hot cup of hot cocoa?

• Radiation
• Conduction
• Convection

The rubber or plastic on electrical cords is an example of 

• insulators
• conductors

When a frying pan is touching a stove that is on, what heat transfer is happening to heat up the pan?

• Radiation
• Conduction
• Convection

Hot air balloons rise because the heated air is less dense than cold air, so as the warm rises as the molecules spread out. The cold air is pushed downward, where it is also heated and rises. This swirling movement of  air as it heats and cools is due to

• convection
• radiation
• conduction

As the earth warms from the sun, it heats the air near its surface. The warm air rises and the cool air sinks, creating ___________ currents. 

• conduction
• convection
• radiation
• Insolation 

The baby chickens kept warm from a heat lamps. This type of heat transfer (from the heat lamp to the chickens) is called

• conduction
• convection
• radiation