grade 6 , con 5 , lesson 1

Any matter has thermal energy, because..........

• its molecules always move.

• it has fixed shape.

• its molecules don't move

• it has fixed volume.

If heat transfers to a lower temperature object, its molecules will.........

• stop moving

• move slower

• move faster.

• not be affected,

Heat transfers from..........object to ........... object

• cooler-hotter

• hotter-cooler

• bigger-smaller

• smaller-bigger

The handle of an electric iron is made of.....

• iron.

• thermal insulator material.

• melal.

• thermal conductor material.

All the following are properties of heat, except...........

• it is an essential component of life on Earth.

• it cannot be lost but it is only transferred.

• it flows from a cooler object to a hotter object.

• it flows from a hotter object to a cooier object.

If you stand on hot sand in barefeet, you will feel the hotness of the sand because...........

• heat transfers from your legs to sand.

• heat transfers from sand to your legs.

• your legs are hotter than sand.

• your legs and sand have the same temperature.

If you hold an ice cube in your hand, which of the following sentences is correct?........

• Your hand temperature is lower than the ice temperature.

• The ice temperature is higher than your hand temperature.

• The ice and your hand have the same temperature.

• The amolecules of ice will start to move faster

When objects with the same temperature touch each other the heat transfer takes place

• true

• false

Heat transferes from the cooler object to the hotter object

• true

• false

Molecules of cold or hot substance always move

• true

• false