insulators and conductors?

Question

Buildings are usually insulated with materials such as fiberglass, which contain pockets of trapped air. The insulation in buildings helps keep warm air from flowing out of buildings in winter, and likewise prevents the warm air from flowing into buildings in summer. What is the best explanation for the effectiveness of insulators such as fiberglass?

1. Gases, such as air, are better insulators than solids or liquids.
2. Heat transfer is accelerated with materials such as fiberglass.
3. Fiberglass is resistant to cold.
4. Fiberglass is resistant to heat.

What is the best explanation for why silver dashboard covers are often placed on vehicles while they are in the hot summer sun?

1. The cover is a conductor.
2. The cover is an insulator.
3. The cover absorbs the radiation from the sun.
4. The cover reflects the radiation from the sun.

What is the difference between temperature and heat?

1. Heat is the measure of the average kinetic energy of molecules, while temperature is a form of energy caused by the internal motion of molecules.
2. Temperature is the measure of the average kinetic energy of molecules, while heat is a form of energy caused by the internal motion of molecules.
3. Temperature is always transferred from a colder substance to a warmer substance.
4. Temperature is always transferred from a warmer substance to a colder substance.

Answer 1

1
4
2

Get an "A".

Answer 2

#1 is 1 #2 is 4