Energy
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The document discusses two forms of energy: heat and light. It describes an experiment to demonstrate heat energy by having students feel which spoon (metal, plastic, or wooden) warms up fastest when placed in hot water. The metal spoon warms up fastest because metals are good conductors of heat, while materials like wood and plastic are insulators. Light is another form of energy, with the major source of light for Earth being the sun.
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Energy
- 1. 5竪 nivell: Science class: What is energy? Two forms of energy: Heat Light
- 2. Experiment : Heat energy moves Problem: Which spoon will get hot the fastest? Materials : You will need: hot water a large bowl a metal spoon a plastic spoon a wooden spoon or stick
- 3. 油
- 4. Procedure: The students feel each object (the metal, the plastic and the wooden) Pour hot water in a bowl Put all three objects into the water Which spoon handle warms up the fastest?
- 5. Discussion Why did the metal spoon warm up the fastest? Because metals are good conductors of heat
- 6. 油
- 7. 油
- 8. 油
- 9. 油
- 10. 油
- 11. Conductors ans insulators materials Introduce the words conductor and insulator.
- 12. A conductor material is something which allows electricity and heat to flow through. Conductor materials: Scissors Paper clip Aluminum Iron Steel Copper Gold Silver
- 13. An insulator material is what makes heat and electricity from not flowing. Examples of insulators are: Cotton Paper Plastic Glass Rubber
- 14. 油
- 15. Why do people use a wooden spoon instead of a metal spoon when they are cooking? Because: A wooden spoon doesnt allow to flow the heat. Remember: People never use a metal spoon when they are cooking .
- 16. Experiment :Light energy Light is another form of energy. Question WHAT THINGS PRODUCE LIGHT?
- 17. 油
- 18. THE SUN IS THE MAJOR SOURCE OF LIGHT FOR THE EARTH
- 19. 油