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- 1. Multiple Choice
Which of these materials is least useful as an insulator?
Cardboard
Aluminum
Rubber
Plastic
- 2. Multiple ChoiceThe ability of a metal to allow heat or electricity to pass through it.conductivityinsulatormassdensity
- 3. Multiple ChoiceWhat is the BEST example of a conductor?A wooden blockA ceramic mugA glass cupA metal bowl
- 4. Multiple ChoiceWhich of the following is NOT an insulator?WoolPlasticCopperStyrofoam
- 5. Multiple ChoiceGloves help keep your hands warm in winter because:They are conductors of heat.They are fuzzy.They are conductors of electrical energy.They are insulators.
- 6. Multiple Choice
Heat transfers from an area of ____temperature to an area of ___ temperature.high to lowlow to highhigh to highIt can travel high to low and low to high. - 7. Multiple ChoiceA student touches a metal sink with her finger and notices that her finger feels cold. Which of the following statements explains this observations?Heat energy flows from the student's finger to the metal.Heat energy flows from the metal sink to the student's finger.The student's finger was originally at the same temperature as the sink.
- 8. Multiple ChoiceA barefoot student steps on a hot concrete surface. Most of the heat transferred to the student’s skin by this contact is by the process of—convectionconductionvaporizationradiation
- 9. Multiple ChoiceThe ability of a metal to allow heat or electricity to pass through it.conductivityinsulatormassdensity
- 10. Multiple Choice
Which of the following increase the rate of conductivity?
Large surface area
Large temperature difference
Small surface area
Small temperature difference
- 11. Multiple Choice
If a metal has fewer free electrons than it's conductivity is lower
TRUE
FALSE
- 12. Multiple Choice
If the particles in a conductor are more tightly packed it will have a smaller conductivity
TRUE
FALSE
- 13. Multiple Choice
The best insulator would have...
Loosely bound particles that are spread out.
Tightly bound particles that are close together.
Tightly bound particles and lots of free electrons.
No particles at all, it would be a vacuum.
- Answer choicesTagsAnswer choicesTags