Heat

Which best explains how convected heat causes a hot air balloon to stay in the air?

• The heat is falling and replacing cooler air.

• The heat is produced from the rising of air currents.

• The heat is absorbed through the balloon from the sun.

• The heat is rising and circulating, causing the balloon to stay up in the air.

Tags

NGSS.MS-ESS2-5

Which best explains how candle wax is shaped into a mold?

• Heat is added to candle wax to melt it so it is more flexible and can take the shape of the mold.

• Heat is added to candle wax to melt it so it is less flexible and can take the shape of the mold.

• Cold is taken away from the candle wax so it is more flexible and can take the shape of mold.

• Cold is taken away from candle wax so it is less flexible and can take the shape of mold.

Tags

NGSS.MS-PS1-4

Which is the best example of heat transfer through radiation?

• heating soup in a pot on a stove

• standing by a campfire to get warm on a chilly night

• burning your hand when touching a hot pan on the stove

• not getting burned when touching a wooden spoon that has been in a hot pan

Clarissa wants to determine the best material to make a new type of cookware. What type of material should she choose?

• A material that heats evenly.

• A material that can be easily bent into shape.

• A material that does not transmit electricity.

• A material that will remain cool to the touch.

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Melinda is trying to understand the difference between heat and temperature. She records some ideas. Which statement is correct?

• Heat and temperature are synonyms. 

• Heat and temperature are antonyms.

• Heat is a measure of the hotness or coldness of an object, and temperature is the transfer of energy between objects. 

• Heat is the transfer of energy between objects, and temperature is the measure of heat energy.

We prefer dark coloured clothes during winter because___________

• It looks brighter in cold weather

• It can absorb sweat quickly

• It absorbs sunlight more and keep us warm

• All of the above

When working with a flame or heat source, you should

• tie back long hair that hangs in front of your eyes

• heat substances or objects inside a closed container

• touch an object with your bare hand and see how hot it is

• throw hot objects into the trash when you are done with them

An engineer can choose from four different materials to make a heat-resistant handle for a stirring spoon. Which material is LEAST likely to get hot when the spoon is placed in boiling water?

• Ceramic

• Wood

• Glass

• Iron

Tags

NGSS.MS-ETS1-3

NGSS.MS-PS3-3

Which is the best example of conduction?

• boiling a pot of water

• feeling heat from a fireplace

• a hot air balloon rising and falling

• touching a hot handle and getting burned

On very hot days, animals will often find a patch of dirt on the ground to lay in to keep cool. Which best explains how laying on the ground and dirt keeps the animal cool?

• The coolness from the ground is transferred to the animal's body, lowering the animal's body temperature.

• Dirt on the ground protects the animal from the heat in the air, lowering the animal's body temperature.

• The animal's body temperature does not change, but the dirt makes the animal feel cooler.

• Heat from the animal's body is transferred to the ground, lowering the animal's body temperature.