Lees Disc Experiment Thermal Conductivity Quiz

What is the process by which heat is transferred through a material due to the collision of particles?

• condensation

• evaporation

• radiation

• conduction

Which type of material is a good conductor of heat: metals or insulators?

• plastic

• rubber

• metals

• wood

Name one factor that affects the thermal conductivity of a material.

• Composition, density, and temperature

• Color, texture, and shape

• Flexibility, hardness, and weight

• Smell, taste, and sound

How is the thermal conductivity of a material measured in the laboratory?

• Steady-state heat flow method

• Intermittent thermal flux approach

• Dynamic heat transfer technique

• Temperature change method

Give an example of an application where knowledge of thermal conductivity is important.

• Mobile phone screen resolution

• Carpet manufacturing

• Cooking utensils for the kitchen

• Heat exchangers for HVAC systems

Explain the concept of heat conduction in metals.

• Heat conduction in metals is the result of magnetic fields interacting with the metal

• Heat conduction in metals is due to the expansion and contraction of the metal

• Heat conduction in metals is caused by the movement of water molecules within the metal

• Heat conduction in metals is the process by which heat energy is transferred through the free electrons and lattice vibrations within the metal.

What are some common insulating materials used to reduce heat transfer?

• Concrete, brick, asphalt

• Fiberglass, foam, cellulose, mineral wool

• Wood, plastic, glass

• Steel, aluminum, copper

How does the thickness of a material affect its thermal conductivity?

• Thicker materials have lower thermal conductivity.

• Thickness of a material has no effect on its thermal conductivity.

• Thicker materials have the same thermal conductivity as thinner materials.

• Thicker materials have higher thermal conductivity.

Discuss the Lees Disc Experiment and its significance in studying thermal conductivity.

• The Lee's Disc Experiment is significant in studying thermal conductivity as it provides a practical method for determining the thermal conductivity of materials.

• The Lee's Disc Experiment is only applicable to liquids and not solids.

• The Lee's Disc Experiment has no practical significance in studying thermal conductivity.

• The Lee's Disc Experiment is used to measure electrical conductivity instead of thermal conductivity.