Year 10 - Making Use Of Energy

How do temperature differences lead to the transfer of energy?

• By conduction, convection, and radiation

• By reflection, refraction, and diffraction

• By absorption, transmission, and emission

• By evaporation, condensation, and sublimation

What is the equation for density?

• density = mass × volume

• density = mass / volume

• density = volume / mass

• density = mass + volume

What model is used to explain better conduction in metals?

• Model of molecular motion with mobile electrons

• Model of atomic vibration

• Model of thermal expansion

• Model of electron repulsion

How can energy loss from houses be restricted?

• By using loft insulation, double glazing, cavity wall insulation, and draught excluders

• By using single glazing, thin walls, and no insulation

• By increasing the number of windows and doors

• By using only electric heating

What factors should be considered to compare the cost-effectiveness and efficiency of different methods of reducing energy loss from the home?

• Payback time, economic and environmental issues

• Color of the insulation material

• Size of the house

• Number of rooms in the house

What is heat?

• A measure of how hot or cold something is

• The amount of thermal energy an object has

• The unit of energy

• The energy associated with movement

How does an object become hot?

• Its particles stop moving

• Its particles vibrate (shake)

• Its particles become more densely packed

• Its particles spread out

What is temperature?

• The amount of thermal energy an object has

• The unit of energy

• A measure of how hot or cold something is

• The energy associated with movement

How do we measure temperature?

• Using a barometer

• Using a thermometer

• Using a hygrometer

• Using a voltmeter

What is the unit of energy called?

• Kelvin

• Celsius

• Joule

• Fahrenheit