| Category | Format | Size |
|---|---|---|
| Qingdao Edition Fifth Grade Science Volume 2 | pptx | 6 MB |
"Energy Everywhere" PPT courseware
Description
"Energy Everywhere" PPT courseware
Part One: Questions and Conclusions
The ability to make objects "work" or move is called "energy"
Question 1: Are light, heat and sound energy?
(1) "Energy can make objects move!" (Criteria for judging energy)
(2) Are heat, light and sound energy?
(3) How to prove it experimentally?
Experiment 1: Heating water?
Experiment 2: Microphone
get conclusion:
Conclusion 1: Heat can make objects move, so heat is a kind of energy.
Conclusion 2: Sound can make objects move, so sound is also a kind of energy.
Conclusion 3: Light is also a kind of energy.
Ubiquitous energy PPT, part 2: energy transformation
Energy can be converted into each other
1. The light bulb will emit heat after being powered on.
Light bulbs convert electrical energy into light energy and heat energy.
2. Car driving: chemical energy is converted into thermal energy and then into mechanical energy.
Several experiments on energy conversion
1. Bending wire experiment: converting mechanical energy into thermal energy.
2. Experiment on restoring a deflated table tennis ball to its original shape: thermal energy is converted into mechanical energy.
3. After combing your hair with a plastic comb, the comb can pick up paper scraps.
Mechanical energy is converted into electrical energy.
Keywords: Qingdao version fifth grade science PPT courseware for the second volume free download, Ubiquitous energy PPT download, .PPT format;
For more information about the "Energy Everywhere" PPT courseware, please click on the "Energy Everywhere PPT" tab.
"Energy Everywhere" PPT:
"Energy Everywhere" PPT Part One Content: Question Discussion Group Discussion: Have you encountered any other examples in life where the movement of objects requires energy? Summary: Energy is the source of all activities. Although you can't see it, it's all around us. Anything only...
File Info
Update Time: 2024-07-02
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