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WorksheetsP2 Thermal Conductivity Quiz
Total questions: 15
Worksheet time: 8mins
What does the thermal conductivity of a material tell you?
How quickly energy is transmitted through it by thermal conduction
How much energy it can store
How much it expands when heated
How quickly it cools down
Which of the following factors does NOT affect the rate of heat loss from a building?
The thickness of its walls and roof
The thermal conductivity of its walls and roof
The color of its walls and roof
The temperature difference between the inside and outside
What is a thermal insulator?
A material with high thermal conductivity
A material with low thermal conductivity
A material that absorbs heat quickly
A material that reflects light
Which equation is used to calculate the energy transferred to the thermal store of a substance?
E = mc^2
ΔE = m × c × Δθ
F = ma
P = IV
What does the specific heat capacity of a material represent?
The amount of energy needed to raise the temperature of 1 kg of the substance by 1°C
The amount of energy needed to melt 1 kg of the substance
The amount of energy needed to vaporize 1 kg of the substance
The amount of energy needed to cool 1 kg of the substance by 1°C
What does a material’s thermal conductivity tell you?
How well it conducts heat
Its density
Its melting point
Its electrical conductivity
Which materials have low thermal conductivity?
Metals
Thermal insulators
Liquids
Gases
Give three factors that determine the rate of thermal energy transfer through a material.
Color, shape, and size
Thermal conductivity of material, temperature difference, thickness of material
Weight, volume, and density
Hardness, flexibility, and elasticity
What factors affect the rate of heat loss from a building?
Thickness of walls and roof, thermal conductivity of walls and roof, the temperature difference between the two sides of the wall/roof
Color of the walls, type of flooring, number of windows
Height of the building, number of floors, type of paint used
Age of the building, type of foundation, number of doors
Define specific heat capacity.
The amount of energy needed to raise the temperature of 1 kg of a material by 1 °C
The amount of energy needed to melt 1 kg of a material
The amount of energy needed to vaporize 1 kg of a material
The amount of energy needed to cool 1 kg of a material by 1 °C
Watts
Seconds
Acceleration
Amperes
time
mass
speed
kinetic
What is the unit of specific heat capacity?
Joules per kilogram per degree Celsius (J/kg°C)
Watts per meter per degree Celsius (W/m°C)
Joules per second (J/s)
Watts per kilogram (W/kg)
Which of the following materials is a good thermal conductor?
Wood
Plastic
Copper
Rubber
What happens to the thermal energy of a substance when its temperature increases?
It decreases
It remains the same
It increases
It fluctuates
