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"Does Air Have Weight?" Water and Air PPT Courseware 2
Think about it: Can you prove your idea experimentally?
Experimental equipment: 1 iron stand, 1 wooden stick or lever, 1 balloon, 1 pen cap, and some thin wires.
experiment procedure:
1. Make your own small balance.
2. Hang a balloon and a pen cap at both ends of the balance and adjust it to balance it.
3. Blow up one end of the balloon and hang it up.
4. What did you find?
Think about it: How can you make the tilt of the lever steeper?
Try this:
1. Hang more balloons.
2. Blow up the balloon.
Can the weight of air be measured?
Comparing the weight of the balloon before and after it is inflated can tell whether the air has weight.
Review and Reflection: What did you gain from studying this lesson?
As long as you observe carefully and take the initiative to explore, you will become the master of science!
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"Does Air Have Weight?" Water and Air PPT Courseware 4:
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"Does Air Have Weight?" Water and Air PPT Courseware 3:
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"Does Air Have Weight?" Water and Air PPT Courseware:
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