Thermal Energy

Which type of heat transfer is shown?

• convection

• conduction

• radiation

• stir frying

Which type of heat transfer is shown?

• convection

• conduction

• radiation

• ironing

What type of heat transfer is shown here?

• convection

• conduction

• radiation

• sun shining

Which type of heat transfer is shown?

• convection

• conduction

• radiation

• hot air balloon

What type of heat transfer is shown here?

• convection

• conduction

• radiation

• boiling water

If a door was left open between the bedroom (74 degrees) and the living room (68 degrees), what would likely happen to the temperatures after several hours?

• nothing, they would not change

• both rooms would become hotter 

• both room would become colder

• the bedroom temp. would lower and the living room temp. would rise

After holding an ice pack against his skin for 20 minutes, the man notices the ice pack is melting. Why is this happening?

• radiation - the ice pack is now all melted

• conduction - body heat transferred to the cold ice pack

• convection - the water in the ice pack flowed in a circle pattern

• conduction - heat came from the bigger object to the smaller

If an insulator is doing it's job well, the temperature of an object over time should...

• rise slowly

• lower quickly

• show very little change

• rise quickly

Which material is the best conductor of heat?

• glass
• styrofoam
• metal
• wood

What materials would be good insulators for a handle on a pan or pot that would be used on the stove?

• wood or plastic
• metal or rubber
• wood or rubber
• copper or steel