Energy Resources

• Changes in energy stores:

  Energy can be stored in different ways and is transferred by heating, waves, electric current, or when force moves objects.

  • Chemical energy ( fuels, food, batteries). Transferred during chemical reactions.
  • Kinetic energy describe the eneryg an object has because it is moving.
  • Gravitational potential energy used to describe the energy stored in an object because of its position.
  • Elastic potential energy describe the energy stored in a springy object when you change it.
  • Thermal energy describe the enery a substance has because of its temperature.
• Energy transfers:

  • When an electic kettle is used to boil water, the current in the ketttle transfers energy to the therman energy store of the water and kettle.
  • In a torch, the torch's battery pushes a current through the bulb. This makes the bulb emit light and get hot.
  • When an object is thrown into the air, the object slows down as it goes up. Kinetic energy is being transferred to the gravitational potential energy store.