conduction

What is needed to fix the nails to the rod in the activity?

• Glue

• Wax

• Tape

• Rubber

What happens to the nails when the rod is heated?

• They fall down

• They melt

• They change color

• They expand

How does heat transfer in solids according to the text?

• By liquid flow

• By air

• By conduction

• By radiation

What must happen for heat to transfer from one object to another by conduction?

• They must be of different colors

• They must be of the same material

• They must be touching each other

• They must be in different rooms

What stops the flow of heat through conduction?

• When the heat source is removed

• When the temperatures are equal

• When the objects detach

• When it starts raining

What happens to the spoon when it is put in hot water?

• It becomes heavy

• It dissolves

• Its temperature rises

• It changes color