Heat

What is conduction?

• Transfer of sound through a substance or material.

• Transfer of light through a substance or material.

• Transfer of matter through a substance or material.

• Transfer of heat or electricity through a substance or material

Which material is a good conductor of heat?

• Glass

• Metals

• Wood

• Plastic

What is insulation?

• A material or substance used to enhance the transfer of heat, electricity, or sound.

• A material or substance used to generate heat, electricity, or sound.

• A material or substance used to prevent the transfer of heat, electricity, or sound.

• A material or substance used to absorb heat, electricity, or sound.

Which material is a good insulator of heat?

• Wood, rubber, and plastic

• Paper, fabric, and glass.

• Copper, aluminum, and iron.

• Metal, glass, and stone.

What happens to heat when it is transferred to a cooler object?

• The cooler object absorbs the heat energy and its temperature increases.

• The heat energy is converted into mechanical energy.

• The heat energy is transferred back to the hotter object.

• The heat energy is destroyed.

What happens to heat when it is transferred to a warmer object?

• The heat is destroyed.

• The heat is transferred back to the original object.

• The heat is converted into light energy.

• The warmer object absorbs the heat and its temperature increases.

Allijah has a chocolate bar in his bookbag. When he went to get the chocolate, he realized it was melted. What question can help us identify the source of the heat that melted the chocolate?

• What is the temperature in the room?

• How big is the bookbag?

• How many students are in the room?

Sarah is outside in the snow with no gloves on. She warms them by rubbing her hands together. This is an example of:

• burning

• friction

• sunlight

Cambri went to a party and got an ice cream cone to eat outside. The ice cream began to melt quicker than she could eat it. What is the best question she could ask to identify the source of the heat?

• What kind of ice cream was it?

• How big was the cone?

• What is the temperature outside?

Dr. Perrer was grilling burgers with her family. When they were cleaning up, they noticed ash was left behind on the grill. What is the source of the heat?

• Burning

• friction

• sunlight