Physics - Energy Flashcards
(26 cards)
What is a PERSON’S ENERGY SOURCE?
Food
What kind of energy store is food?
Chemical energy store
What are the 5 ENERGY TRANSFERS?
- Heating
- Light
- Sound
- Electricity
- Forces
What is the unit for measuring energy?
Joules (J)
What is the usual way to measure the energy in food?
Kilojoules (kJ)
Define CHEMICAL ENERGY STORES
Chemical energy stores - food, fuels and batteries
Define KINETIC ENERGY STORES
Kinetic energy - moving objects
Define THERMAL ENERGY STORES
Thermal energy - hot objects
Define STRAIN ENERGY STORES
Strain energy / Elastic potential energy - objects that are stretched, squashed or twisted
Define GRAVITATIONAL POTENTIAL ENERGY STORES
Gravitational potential energy - objects moved to higher places
Define NUCLEAR ENERGY STORES
Nuclear energy / Atomic energy - inside the every single particle
What are the 6 stores of energy called?
- Chemical energy
- Kinetic energy
- Thermal energy
- Strain energy / Elastic potential energy
- Gravitational potential energy
- Nuclear energy / Atomic energy
What does the LAW OF CONSERVATION OF ENERGY state?
Energy can neither be created or destroyed
What do FUELS STORE
Energy
How is the ENERGY TRANSFERRED FROM FUELS?
Burning them
What are fuels used for?
Heating things
What are FUELS USED for?
Heating things
How were FOSSIL FUELS FORMED?
From dead organisms which had been trapped underground for hundreds of millions of years
What are the 3 most common types of fossil fuels?
- Coal
- Oil
- Natural gas
What are the 3 MOST COMMON types of FOSSIL FUELS?
- Coal
- Oil
- Natural gas
Define NON-RENEWABLE
Non-renewable - something that cannot be replaced as fast as it’s being used up: something that will eventually run out
Where did FOSSIL FUELS originally OBTAIN their ENERGY from?
The Sun
Name 2 NON-RENEWABLES
- Fossil fuels
- Nuclear fuel
What is NOT a FUEL?
Electricity
