- Posted:
- 11.11.2014
- Opracowanie:
Administrator
Hang a cup or a glass on a string. Will the effect be the same? Attach a different number of nuts to the end of the string. Will anything change?
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- Duration:
- 1 ?
- Field:
-
Physics, Mathematics,
- Tags:
- pendulum, energy, movement
- Posted:
- 11.11.2014
- Opracowanie:
Administrator
What will happen if water in the bucket before putting a can into it is hot? Try to carry out the experiment so that the observed phenomenon is stronger and louder.
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- Duration:
- 1 ?
- Field:
-
Physics, Chemistry,
- Tags:
- flame, temperature, boiling, can, water, pressure
- Posted:
- 11.11.2014
- Opracowanie:
Administrator
Let one person put on a fur coat or a fleece jacket and ask him/her to stand dressed like that for 10 minutes in a warm room. If it’s cold, ask him/her to jump several times. Watch the skin on exposed parts of body.
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- Duration:
- 1 ?
- Field:
-
Physics, Chemistry, Biology,
- Tags:
- heat, melting, ice, insulation
- Posted:
- 11.11.2014
- Opracowanie:
Administrator
Use a thin wire instead of a string. Speak at different rates. Speak quietly and loudly. Try to speak in a low and in a high voice. Try to use other vessels.
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- Duration:
- 1 ?
- Field:
-
Physics, Biology, Social,
- Tags:
- sound, vibration, communication, voice, speech, hearing
- Posted:
- 11.11.2014
- Opracowanie:
Administrator
Instead of cabbage decoction, use: water, blackcurrant juice, beetroot juice, hibiscus tea or blueberry juice. Use lemon juice or vinegar instead of citric acid.
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- Duration:
- 1 ?
- Field:
-
Physics, Chemistry,
- Tags:
- acid, alkali, reaction, pH, neutralisation reaction