Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- 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. |