In this worksheet, we will practice describing heat transfer through solid materials via conduction and defining the factors that determine the effectiveness of insulation.
Q1:
Which of the following is the correct definition of conduction?
- AConduction is the process of energy transferring from a hot object via the radiation of electromagnetic waves.
- BConduction is the process of high-energy particles moving away from a part of a material that is hotter to one that is colder.
- CConduction is the process of high-energy particles moving away from a part of a material that is colder to one that is hotter.
- DConduction is the process of heat transferring from one part of a solid to another due to collisions between particles within the solid.
Q2:
Which of the following does the energy transferred per second through a layer of insulating material depend on?
- The thickness of the material
- The mass of the material
- The color of the material
- The thermal conductivity of the material
- The temperature difference across the material
- Aa, d, c
- Ba, b, c
- Cb, d, e
- Da, d, e
- Ec, d, e
Q3:
Which of the following materials is likely to have the lowest thermal conductivity?
- AIron
- BCopper
- CGold
- DWood
- ETin
Q4:
Which of the following materials is likely to have the highest thermal conductivity?
- AGlass
- BPlastic
- CWood
- DCopper
- EFelt
Q5:
Which of the following is the correct definition of convection?
- AConvection is the process of energy transferring from a hot object via the radiation of electromagnetic waves.
- BConvection is the process of heat transferring from one part of a solid to another by the collision of particles and the movement of electrons within the solid.
- CConvection is the process of high-energy particles moving away from a part of a material that is colder to one that is hotter.
- DConvection is the process of high-energy particles moving away from a part of a material that is hotter to one that is colder.
Q6:
Amelia wraps three beakers in different materials. She then fills the beakers with water at . She measures the temperature of the water in each beaker 30 minutes later. Her results are shown in the table.
| Material | Felt | Cardboard | Aluminum Foil |
|---|---|---|---|
| Initial Temperature of the Water | |||
| Temperature of the Water after 30 Minutes |
Which material was the best insulator?
- AAluminum foil
- BFelt
- CCardboard
Which material was the worst insulator?
- AAluminum foil
- BCardboard
- CFelt