1) The useful energy from a kettle is... a) sound b) heat c) kinetic d) electrical 2) When the water in a kettle is moving around and bubbling, energy is wasted in the form of... a) kinetic energy b) heat energy c) friction d) light energy 3) Select all of those that are waste energy in a kettle a) heat b) kinetic c) sound d) electrical 4) Why is it important that a cooking pan is made out of metal? a) The metal is an insulator b) the metal conducts electricity c) The metal conducts heat d) the metal is a non-insulator 5) Plastic is... a) A good conductor of heat b) A good conductor of electricity c) Malleable d) an insulator 6) Which of the following are renewable energy sources? a) wind power b) coal c) oil d) gas e) biofuel f) solar 7) A force is... a) a kind of energy b) a push or pull c) kinetic d) visible (we can see it) 8) When air hits the front of a car, it is known as... a) air resistance b) upthrust c) push d) gravity 9) We have contact forces when... a) when objects are not touching b) objects are touching c) gravity acts on an object d) when our hands rub together 10) What effect does friction have on temperature? a) The temperature increases b) The temperature decreases 11) What happens to the temperature of the brakes when they are pressed? a) The temperature goes down b) The temperature increases 12) What happens to our stopping distance when we travel at a slower speed? a) The stopping distance will decrease b) The stopping distance will increase 13) To calculate speed we use the equation Speed = distance /time. If an object moves 20m in 5s what is the speed of the object? a) 20m/s b) 5m/s c) 4m/s d) 100m/s 14) How do we calculate speed? a) Speed is distance over time b) Speed is time over distance c) Speed is distance x time d) Speed is time x distance 15) To calculate distance we... a) Divide speed by time b) Divide time by speed c) multiply time by speed 16) If the road was icy, covered in snow or very wet due to rain, what would happen to the stopping distance? a) It would increase b) It would decrease 17) If you drink alcohol, what will happen to your reaction times and thinking distance? a) It would increase b) It would decrease 18) Which of the following statements are true? a) Radioactive atoms have nuclei that are unstable b) Delta radiation is given out by radioactive atoms c) Unstable atoms/nuclei give out radiation d) gamma radiation can be used to sterilize equipment 19) Which of the following statements are true? a) Gamma radiation can travel through paper b) Gamma radiation is stopped by aluminium sheets c) Gamma radiation is stopped by thick lead d) Gamma radiation can be stopped by skin 20) Which of the following statements are true? a) Alpha radiation is the largest particle b) Alpha radiation is used in smoke detectors c) Alpha radiation can travel through lead d) alpha radiation cannot travel through skin

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