Types of energy ppt 1
- 1. What is Energy? •The word energy comes from the Greek word “Energos” which means active •Energy is the ability to cause change
- 2. Energy… •…is the ability to make things move
- 3. The seven types of energy… •Chemical - gasoline, •Light – sun, •Heat – burner, •Nuclear , sun •Mechanical - car, •Sound – music on the radio, •Electrical - lightning
- 4. Kinetic energy: Kinetic Energy It’s the energy an object has due to motion Example: A moving bowling ball has energy that causes the pins to fall . This energy is called kinetic energy.
- 5. The sky diver has kinetic energy A ball kicked by a football player has a kinetic energy
- 6. Mass, Speed and Kinetic Energy • All moving objects have kinetic energy. • Not all moving objects have the same amount of kinetic energy. • The amount of kinetic energy an object has depends on the mass and the speed of the object
- 7. Imagine those two rocks are rolling down the hillside with the same speed. Which one will have more kinetic energy? Which one will cause more damage if they hit something at the bottom? The larger rock could cause more damage because it has larger mass and has more kinetic energy than the smaller rock
- 8. Kinetic energy also depends on speed . The faster object has more speed and has more kinetic energy
- 9. Transferring kinetic energy Kinetic energy could be transferred from one object to another when they collide . •The bowling ball does not touch all the pins but it can knock them down with one roll . •The bowling ball transfer kinetic energy to few pins. •The pins will transfer this kinetic energy to each other and knock them down
- 10. •A transfer of kinetic energy takes place when dominos fall. •When you tap the first domino you give it a kinetic energy •Then the domino will fall into the next one and the kinetic energy will be transferred from one domino to another