Heat Energy

Which of the following is an example of radiation? 

• Macaroni moving around in a pot of boiling water.
• Steam rising from a boiling pot of grits being cooked.
• The sun shining through a window and warming a table.

The heat from the lamp allows this lizard to remain warm. This is an example of which type of heat transfer?

• radiation
• convection
• conduction
• insulation

Which best describes the flow of heat?

• from a larger object to a smaller object
• from a warmer object to a cooler object 
• from a cooler object to a warmer object

Madalyn wants to roast marshmallows over a fire. Which best explains how this process happens?

• The warmth of the fire is conducted into the marshmallow.
• The warmth of the fire is radiated into the marshmallow.
• The coolness of the marshmallow is conducted into the fire.
• The coolness of the marshmallow is radiated into the fire.

Kayla has a wooden rod, a steel rod, and a glass rod. How could she compare the materials to find out which transfers thermal energy BEST?

• Submerge each rod in ice water to find out which loses the most heat.
• Place the three rods in a freezer to find out which becomes the coldest.
• Place one end of each rod in very hot water to find out which becomes hot the fastest.
• Place the rods on a table in a warm room and find out which feels warmest after a period of time.

Selah is boiling water in a metal pot for a weather experiment. What is most likely the reason she would need to use a pot holder for moving the metal pot?

• Radiation causes the pot to be hot.
• Conduction causes the pot to be hot.
• Convection causes the pot to be hot.
• Transpiration causes the pot to be hot.

Which shows an example of convection?

• Josie cooks an egg in a pot of boiling water.
• Clare burns her hand by touching a light bulb.
• Lexie wraps herself in an electric blanket to keep warm.
•  Ben holds the end of a metal rod in fire to cook hot dogs.

Which is the best example of convection?

• a camp fire
• a light bulb
• a hot air balloon
• a microwave oven

Which is an example of radiated heat for cooking?

• cooking a pot of soup
• scrambling eggs on the stove
•  grilling hot dogs over a campfire
• frying hamburgers in a frying pan

Which of the materials would be the best conductor of heat?

• plastic
• metal
• stone
• wood