Convection, Conduction, Radiation

Which is an example of conduction?

• Steam is rising from a cup of hot coffee.
• A hot biscuit is warming the plate it is on.
• The sun is shining through a window and warming a table.
• Grilling a hot dog over a campfire.

You are stirring your hot chocolate with a metal spoon, and notices that the spoon is getting hot. This is most likely caused by which type of heat?

• conduction
• convection
• radiation
• insulation

Which is the best choice for the handle of a frying pan?

• Metal, because it conducts heat.
• Wood, because it conducts heat.
• Metal, because it does not conduct heat.
• Wood, because it does not conduct heat.

Which is an example of radiation?

• boiling a pot of noodles for dinner
• getting hot from lying in the sun
• feeling warm while taking a hot shower
• burning yourself after touching a hot plate

Which substance will conduct the least amount of heat?

• glass
• plastic
• aluminum
• copper

Which best describes heat transfer by radiation?

• a slice of bacon frying in a pan
• a pot on a stove boiling water
• a camp fire warming hands
• a hot air balloon

Why does an ice cube melt when dropped into hot liquid?

• The liquid absorbs heat from the ice.
• Heat from the liquid transfers to the ice.
• Heat from the ice transfers to the liquid.
• Cold from the ice transfers into the liquid.

You put a heat pack on your cold feet. What will most likely be the result?

• The cold from your feet will be radiated into the heat pack.
• The warmth of the heat pack will be radiated onto your feet.
• The cold from your feet will be conducted into the heat pack.
• The warmth of the heat pack will be conducted onto your feet.

You are wearing gloves while you get a hot pan out of the oven. Which best explains why you need to wear gloves while carrying the hot pan?

• The gloves protect your hands from convection heat in the hot pan.
• The gloves protect your hands from heat that is radiated through the hot pan.
• The gloves protect your hands from heat that is conducted through the hot pan.
• The gloves protect your hands from heat that enters the pan from the surrounding air.

Which is an example of convection?

• the heat coming from a campfire
• a spoon in a bowl of soup becoming warmer
• warmer water at the surface of a swimming pool
• a hamburger being warmed by a campfire