Question

directions 1-8; determine whether the bolded term makes each statement true or false. if the statement is true, write true in the blank. if the statement is false, write false in the blank.

1. materials that are poor conductors are poor insulators.
2. the transfer of thermal energy through matter by direct contact of its particles, is convection.
3. the transfer of energy in the form of electromagnetic waves is conduction.
4. solids usually conduct thermal energy better than liquids and gases.
5. air is a poor conductor of thermal energy.
6. thermal energy is usually transferred in fluids by radiation
7. as air is heated, it expands, becomes less dense, and rises.
8. dark - colored materials absorb less radiant energy than light - colored materials.

Explanation:

1. Materials that are poor conductors are good insulators.
2. The transfer of thermal energy through matter by direct contact of its particles is conduction.
3. The transfer of energy in the form of electromagnetic waves is radiation.
4. Solids usually conduct thermal energy better than liquids and gases.
5. Air is a poor conductor of thermal energy.
6. Thermal energy is usually transferred in fluids by convection.
7. As air is heated, it expands, becomes less dense, and rises.
8. Dark - colored materials absorb more radiant energy than light - colored materials.

Answer:

1. False
2. False
3. False
4. True
5. True
6. False
7. True
8. False