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10 Cards in this Set

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  • Back

What is a kWh?

kWh stands for "Kilowatts per Hour/Kilowatt-Hours"; it defines how many kilowatts are used in that time to be converted into a price to be paid.

What are the types of energies?

- Kinetic


- Thermal


- Light


- Gravitational Potential


- Chemical


- Sound


- Electrical


- Elastic


- Nuclear

What are Watts?

Watts are the amount of power that goes into an appliance. This is returned as joules, which is a measurement of energy.

To find out an energy transfer from watts into money, you calculate the power of the device multiplied by the time taken to use.

A cooker with a power of 2 kilowatts is used for an hour.



This means it's 2kWh.

What fraction of our electricity is generated from fossil fuels?

3/4

What is kinetic energy?

Kinetic energy is any energy used to move something.

What is gravitational potential energy?

Gravitational potential energy is the energy that is used when not touching the ground - the force pulling downwards.

What is thermal energy?

Thermal energy is also known as heat energy - the heat emitted from something.

What is light energy?

Light energy is what is emitted from something that can create its own light and enables us to see.

What is wasted energy?

Wasted energy is energy that is generated unintentionally, and not for the purpose it is intended for. For example, light can create heat, which is often undesired.