Term
| What is the main form of energy from a fire ? |
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Definition
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Term
| What is the main form of energy from a torch ? |
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Definition
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Term
| What is the form of energy used by a TV? |
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Definition
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Term
| What is the form of energy coming from a radio? |
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Definition
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Term
| What is the form of energy all moving objects have ? |
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Definition
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Term
| What is the energy change in a kettle? |
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Definition
| electrical → heat + sound |
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Term
| What is the energy change in a light bulb ? |
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Definition
| electrical → light + heat |
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Term
| What is the name for stored energy? |
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Definition
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Term
| What form of energy is stored in food, fuels and batteries ? |
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Definition
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Term
| What form of energy is stored in atoms? |
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Definition
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Term
| What form of energy is stored in a person at the top of a slide ? |
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Definition
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Term
| What form of energy is stored in a stretched catapult ? |
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Definition
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Term
| What is the energy change when wood is burned? |
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Definition
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Term
| What is the energy change when a mobile phone is on? |
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Definition
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Term
| What is the energy change when an apple falls off a tree? |
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Definition
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Term
| What is the energy change when you climb up stairs ? |
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Definition
| chemical → kinetic → gravitational |
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Term
| What is the Unit of energy? |
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Definition
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Term
| If a car uses 5000J of chemical energy to make 4000J of kinetic energy how much energy is wasted ? |
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Definition
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Term
| How do you calculate % efficiency of a machine |
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Definition
| useful energy÷ starting energy x 100 |
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Term
| What is the calculation for the % efficiency of a kettle that uses 100J of energy to make 80J of heat? |
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Definition
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Term
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Definition
| when kinetic energy of surfaces rubbing against each other is transformed into heat |
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Term
| When electric currents flow in wires what from of energy is produced? |
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Definition
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Term
| How is electrical energy generated? |
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Definition
| a moving magnet in a coil of wire |
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Term
| What fuels are used in the majority of our electricity generation? |
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Definition
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Term
| What is the energy change in the boiler of a power station? |
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Definition
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Term
| What is the steam used for in a power station? |
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Definition
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Term
| What is the energy change in a generator ? |
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Definition
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Term
| Why do we need alternative ways of making electricity other than burning fossil fuels? |
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Definition
| they are non-renewable and will run out |
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Term
| How does a nuclear power station differ from a fossil fuel power station? |
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Definition
| the heat is made by a nuclear reaction rather than burning a fuel |
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Term
| How is a nuclear power station the same as a fossil fuel power station? |
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Definition
| the heat boils water to make steam (the steam turns turbines the turbines turn a generator) |
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Term
| What are four examples of renewable sources of energy? |
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Definition
| Wind, Hydroelectric, Solar, Wave |
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Term
| What is an advantage of wind energy? |
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Definition
| renewable energy/does not produce waste gases |
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Term
| What is a disadvantage of wind energy? |
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Definition
| unreliable as no wind = no energy/ people do not like the appearance of the turbines |
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