Question

1. even cold materials radiate some _. 8. all molecules have _. more molecules = _ heat. 9. which has more heat energy the ice sculpture or a lighted match? _

Explanation:

1. All materials, regardless of temperature, radiate electromagnetic waves. Cold materials radiate infrared radiation.
2. Molecules have kinetic energy due to their motion. The total heat energy is related to the number of molecules; more molecules mean more total heat energy.
3. The ice - sculpture has a much larger number of molecules and although its temperature is low, its total heat energy (thermal energy) is greater than that of a lighted match which has fewer molecules and high - temperature but overall less total thermal energy.

Answer:

1. Infrared radiation
2. Kinetic; more
3. The ice sculpture