One example of bad thermal insulator is

The stopper is made up of

A. metal

B. transition metal

C. good insulator of heat

D. poor insulator of heat

"Thermos" was invented by a

A. French scientist

B. Spanish scientist

C. American scientist

D. Scottish scientist

Fire fighters use thermal image cameras to identify

A. the spread of fire

B. the source of fire

C. the heat released by fire

D. the temperature of fire

Like light and heat, radio waves can also travel through

A. water

B. solids

C. sand

D. vacuum

If a substance is hot, its particles will

A. move fast than the cooler object

B. move slow than the cooler object

C. move as the cooler object

D. may move fast or slow than the cooler object