1.State the law of conservation of energy.
1.Describe the energy transfer when a moving object comes to a sudden stop
1.Name the piece of equipment used to measure the force needed to lift an object.
1.Give the following to 3 significant figures: 23.4100351
How is most energy lost from a home?
Define conduction.
Define radiation.
Why do we want to reduce the amount of energy wasted?
How are houses insulated
What factorsincrease the rate of thermal energy loss from a house?
1.Most of the energy lost from our houses spreads out into the surroundings by (radiating as sound/heating).
2.Two reasons that we want to stop this happening are because reducing waste helps to… and…
3.Heat will be lost from a 35°C home more rapidly if the outside temperature is (30°C / 15°C).
4.The house will also lose more heat if the walls are (thick/thin) and have a (larger/smaller) area.
Describe the laws which control energy transfers within a system and explain how wasted energy can be reduced.