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;
18 Cards in this Set
- Front
- Back
|
State the unit of energy |
Joules (j) |
|
|
Name three fuels |
- Food - Fossil Fuels (e.g. charcoal) - Oil |
|
|
State the law of conservation of energy |
'Energy cannot just disappear, and you cannot end up with more than you had at the start. Energy cannot be created or destroyed, only transferred.' |
|
|
State three ways that energy is transferred between stores |
- Electric current - Light - Sound |
|
|
State the unit of temperature and the unit of energy |
Temperature: degrees Celsius (oC) Energy: joules (j) |
|
|
State what happens to the particles in a liquid when you heat it up |
They move faster and vibrate more |
|
|
State what is meant by equilibrium |
When two objects end up at the same temperature. |
|
|
Write a definition for the word 'conductor' |
A conductor of energy is something that allows energy to pass through it |
|
|
State what an insulator is |
Insulators do not conduct at all and energy is passed very slowly through them |
|
|
Name two sources of infrared radiation |
- You - The sun |
|
|
State what happens when infrared hits a shiny surface |
The infrared is reflected back to where it comes from |
|
|
Name three fossil fuels |
- Coal - Oil - Gas |
|
|
Name the greenhouse gas that is produced when fossil fuels burn |
Carbon Dioxide |
|
|
Name three renewable resources |
- A wind turbine - Tidal - Turbine - Biomass - Solar - Hydroelectric - Geothermal |
|
|
State the unit of power |
watts (w) |
|
|
State the unit of energy that electricity companies use |
kWh (kilowatt hours) |
|
|
State the equation for calculating work |
work done = force x distance |
|
|
Name two types of simple machine |
- Levers - Gears |
