Module 5.2 'Energy Efficiency'

Define energy efficieny

• A Sankey diagram

• A measure of how much useful energy output is produced in energy output

• When an appliance uses a lot of energy and creates a high energy bill

• Gravitational Potential Energy

What is an energy rating label?

• The useful energy shown in a Sankey diagram.

• The kinetic energy of an object in motion.

• A sticker found on appliances that indicate the energy efficiency

What is heat energy?

• How hot it is outside.

• The type of energy most often listed as wasted energy in an energy conversion.

• When you get more energy in relation to how hot you feel.

What is LED lighting?

• A type of gravitational potential energy.

• An inefficient source of lighting.

• A type of energy efficiency rating.

• A highly efficient source of lighting.

What is insulation?

• Materials placed in the ceiling and the walls of buildings to reduce heat loss.

• When you stuff your shoes with socks to look taller.

• An inefficient method of heating or cooling a house.

• A type of kinetic energy.

An electric toothbrush produces what type of useful energy?

• Heat energy.

• Good dental hygiene.

• Kinetic energy.

• Chemical energy.

What types of appliances in Australia must carry an energy efficiency label?

• Animals that move fast like emu and kangaroo.

• All old fridges, freezers, TVs, washing machines, clothes dryers and dishwashers sold in Australia.

• Any new fridge, freezer, TV, washing machine, clothes dryer and dishwasher sold in Australia.

How does adding insulation to a house and sealing gaps reduce the energy costs of heating and cooling the house?

• It stops ants from getting in and you use less energy trying to shoo them back outside.

• The heat exchange is reduced between the inside and the outside of the house. This makes heating or cooling more effective and that saves money.

• It keeps the house at a constant temperature of absolute zero.

What forms of wasted energy might be produced by a car?

• Tyre and rubber energy.

• Heat and sound energy.

• Electric windows energy.

• Windscreen wiper energy.

What is sound energy?

• Sound energy comes from vibrations moving through something. Solids, liquids, and gases all transmit sound as energy waves.

• The energy of objects in motion.

• The space between molecules when temperature is increased.