Question

4. Heat transfer in fluids occurs almost entirely
by .......
5. Transfer of heat through a vacuum occurs
by ........
6. The most important mode of transfer of heat
in solids is ......
7. Adding salt ...... the melting point of ice.
Write true or false.
1. When a material is heated, its density
decreases.
2. Cotton is a better insulator when it is
compressed than when it is fluffy.
3. Convection plays a central role in setting
up breezes.
4. Synthetic materials are nonflammable.
5. Good absorbers of radiation are poor
reflectors, and vice versa.
6. Ice and water coexist at 32 °F.​

Answer 1

Answer:

4.convection

5.Radiation

6.conduction

Answer 2

Answer:

true or false answer

Explanation:

1-false

2- true

3-true

4-false

5-true

6-false