# ENERGY AND ELECTRICITY

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• Created by: Pippa124
• Created on: 30-03-14 19:05
How do you find the energy? (kWh)
Power * Time
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What does a sanki diagram do?
It shows how much energy going in, how much useful energy comes out and how much energy is wasted.
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How is the useful and wasted energy shown on a sanki diagram?
The useful energy goes horizontally, the wasted goes downwards and all the energy imputed is shown on the left.
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What is energy measured in?
Joules (J)
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Name the types of active energy.
Light, sound, electrical, kinetic (movement), thermal (heat).
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Name the types of stored energy.
Chemical, gravitational and strain (elastic).
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What is stored energy?
They have the potential to cause something.
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What is current?
The flow of charge.
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What is current measured using?
An ammeter.
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What is voltage?
The difference in electrical energy between two points.
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What is resistance?
The resistance in current.
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What happens to the current in a series circuit?
The current remains the same.
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What happens to the current in a parallel circuit?
The current splits.
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How do you find the resistance?
Voltage dived by current.
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What happen to the voltage in a series circiut?
The voltage splits between the bulbs.
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What happens to the voltage in a parallel circuit?
The voltage stays the same.
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Give an example of an energy transfer system.
Electrical - light bulb - thermal and light energy
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What is the general energy transfer system?
Energy input + process + energy output
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What are the steps of a power station?
1. the fuel is burned to boil water to make steam. 2. the steam makes a turbine spin. 3. he spinning turbine turns a generator which produces energy. 4. the electricity goes to the transformers to produce the correct voltage.
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Where does the energy needed to boil water come from?
Fossil fuels or nuclear fuels.
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What happens with renewable energy sources? eg: wind/wave power.
They drive the generators directly.
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## Other cards in this set

### Card 2

#### Front

What does a sanki diagram do?

#### Back

It shows how much energy going in, how much useful energy comes out and how much energy is wasted.

### Card 3

#### Front

How is the useful and wasted energy shown on a sanki diagram?

### Card 4

#### Front

What is energy measured in?

### Card 5

#### Front

Name the types of active energy.