C1 Quick Revision Questions - WordPress.com · C1 Quick Revision Questions Author: jones Created...
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P1 Quick Revision Questions
P1 for AQA GCSE examination 2018 onwards
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Question 1
• What type of energy is stored in a stretched elastic band?
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• Elastic potential energy.
Answer 1 .... of 50
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Question 2
• What type of energy is stored when an object is moved upwards?
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• Gravitational potential energy
Answer 2 .... of 50
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Question 3
• What is the equation for gravitational potential energy?
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• Ep = mgh
Answer 3 .... of 50
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Question 4
• What is the equation for elastic potential energy?
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• Ee = ½ ke2
Answer 4 .... of 50
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Question 5
• What is the equation for work done?
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• Work done = force x distance.
Answer 5 .... of 50
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Question 6
• What is the equation for kinetic energy?
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Answer 6 .... of 50
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Question 7
• What is the energy transfer when a moving object encounters friction?
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• Kinetic energy Heat energy
Answer 7 .... of 50
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Question 8
• What is the equation for power?
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Answer 8 .... of 50
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Question 9
• What is the equation for specific heat capacity?
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Answer 9 .... of 50
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Question 10
• Why does water take longer to heat up than copper?
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• Because it has a higher specific heat capacity therefore more energy is required to raise it’s temperature.
Answer 10 .... of 50
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Question 11
• What is the unit of Gravitational Potential Energy?
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• Joules
Answer 11 .... of 50
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Question 12
• What is the unit of speed?
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• m/s
Answer 12 .... of 50
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Question 13
• Jack walks on a level floor. Does he gain or lose any gravitational potential energy?
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• Stays the same, because his height above the floor does not change
Answer 13 .... of 50
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Question 14
• What’s the unit of Elastic Potential Energy?
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• Joules
Answer 14 .... of 50
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Question 15
• What is my weight on the Earth if my mass is 93kg?
(g=10 N/kg)
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Answer 15 .... of 50
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Question 16
• What’s the unit of Kinetic Energy?
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• Joules
Answer 16 .... of 50
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Question 17
• I’m driving a car at 10 m/s. My mass is 60 kg. Calculate my kinetic energy?
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Answer 17 .... of 50
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Question 18
• What happens to your kinetic energy if your speed doubles?
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• Quadruples.
Answer 18 .... of 50
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Question 19
• What is the unit of work done?
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• Joules
Answer 19 .... of 50
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Question 20
• What is the unit of force?
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• Newtons
Answer 20 .... of 50
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Question 21
• Kim is holding a 30 N bag without moving. How much work is she doing?
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• 0
Answer 21 .... of 50
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Question 22
• What is the unit of mass?
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• kg
Answer 22 .... of 50
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Question 23
• What is the unit of weight?
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• Newtons
Answer 23 .... of 50
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Question 24
• What is the unit of power?
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• Watts
Answer 24 .... of 50
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Question 25
• What is one Watt of power?
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• One Joule of energy transferred in one second
Answer 25 .... of 50
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Question 26
• What is a κW?
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• 1kW=1,000 W
Answer 26 .... of 50
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Question 27
• A motor does 2kJ of work in 1 minute. What power does it develop?
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Answer 27 .... of 50
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Question 28
• What’s the difference between heat and temperature?
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• When something is heated, thermal energy is transferred to it. Temperature is a measure of how hot or cold something is.
Answer 28 .... of 50
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Question 29
• What is the unit of specific heat capacity?
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Answer 29 .... of 50
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Question 30
• Why oiling the moving parts of a machine improves its efficiency?
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• It reduces the friction, so less energy is wasted as thermal energy
Answer 30 .... of 50
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Question 31
• Is solar energy reliable?
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• No, you cannot use solar energy during the night or in bad weather
Answer 31 .... of 50
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Question 32
• Can energy be transferred in a vacuum?
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• Yes
Answer 32 .... of 50
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Question 33
• Which is the only way energy can be transferred in a vacuum?
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• Radiation
Answer 33 .... of 50
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Question 34
• Is nuclear energy renewable or not?
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• Non-renewable. Supplies will run out.
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Question 35
• Describe the energy transfer when a ball held above the ground is allowed to fall.
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• Before the ball is dropped it has a store of gravitational potential energy. As it falls, energy is transferred to a store of kinetic energy.
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Question 36
• What affects the amount of work done by a force?
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• The magnitude of the force and its displacement.
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Question 37
• A PlayStation is rated at 350 W. How much energy is transferred in 10 s?
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Question 38
• Define specific heat capacity
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Question 39
• Why water is used to cool car engines?
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• Water has a very high specific heat capacity, so it can absorb a large amount of thermal energy from a hot object for a given temperature change of the water.
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Question 40
• Why clothing made from wool is a good insulator?
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• Air is trapped between the wool fibres. Wool and air are bad conductors of thermal energy.
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Question 41
• What is the law of conservation of energy?
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• The total energy in a closed system is always constant. Energy cannot be created or destroyed.
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Question 42
• What is the equation for efficiency?
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Answer 42 .... of 50
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Question 43
• Calculate the efficiency of an LED light bulb which consumes 12 J of electrical energy and
produces 9 J of light energy
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Answer 43 .... of 50
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Question 44
• Give an example of an electrical device that transfers energy to a kinetic energy store
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• A fan, a drill, an electric car…
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Question 45
• Where does tidal energy come from?
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• The gravitational potential energy store of the Moon
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Question 46
• Why the amount of energy we need in the world increases every year?
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• The population of the world is increasing, more countries are developing and need more energy for their industries…
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Question 47
• Give two ways fuel-burning power stations can cause pollution.
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• The release carbon dioxide, which contributes to global warming.
• They emit sulfur dioxide which causes acid rain
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Question 48
• Name a concern about nuclear power stations
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• They create waste, which will remain radioactive for many years.
• There is a possibility of a nuclear accident which would contaminate an area.
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Question 49
• Mary walks up some stairs. Is she doing any work?
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• Yes, by lifting her weight up the stairs.
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Question 50
• What is the unit of gravitational field strength?
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• N/kg
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