Thermal Conductivity Quiz

What is thermal conductivity?

• The ability of a material to absorb heat.

• The rate at which a material cools down.

• The measure of how hot a material can get.

• The property of a material to conduct heat

Which material has the highest thermal conductivity?

• Diamond

• Copper

• Wood

• Glass

What is conduction?

• Transfer of heat or electricity through a substance or material

• Transfer of matter through a substance or material.

• Transfer of light through a substance or material.

• Transfer of sound through a substance or material.

Give an example of conduction.

• Feeling the warmth of the sun on your skin.

• Touching a hot pan and feeling the heat transfer to your hand

• Seeing a person's breath in cold weather.

• Holding a cold drink and feeling the coldness transfer to your hand.

What is thermal insulation?

• A material that increases the transfer of heat between objects or spaces.

• A material that has no effect on the transfer of heat between objects or spaces.

• A material or combination of materials that reduces the transfer of heat between objects or spaces.

• A material that only reduces the transfer of cold between objects or spaces.

Which material is a good thermal insulator?

• Air

• Wood

• Metal

• Glass

What is the unit of thermal conductivity?

• W/m

• W/m²·K

• W/K

• W/m·K

• J/m·K

How does thermal conductivity affect heat transfer?

• Thermal conductivity increases the temperature of the object.

• Thermal conductivity has no effect on heat transfer.

• Thermal conductivity decreases the rate of heat transfer.

• Thermal conductivity determines the rate of heat transfer.

What are the factors that affect thermal conductivity?

• Electrical conductivity, magnetic properties, and hardness.

• Color, shape, and size.

• Density, pressure, and humidity.

• Type of material, temperature, and presence of impurities or defects

Why is thermal insulation important in buildings?

• To reduce heat transfer and improve energy efficiency.

• To have no effect on heat transfer and energy efficiency.

• To promote heat transfer and reduce energy efficiency.

• To increase heat transfer and decrease energy efficiency.