- Posted:
- 11.11.2014
- Opracowanie:
Administrator
Can you warm up cold hands using the brake if you make more rounds? Can you carry out the same experiment using a bicycle? Or rollerblades?
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- Duration:
- 1 ?
- Field:
-
Physics, Outdoor activities,
- Tags:
- friction, kinetic energy, thermal conductivity of metals, movement, wheel, scooter, temperature
- Posted:
- 11.11.2014
- Opracowanie:
Administrator
Check what is the reaction of a cell made of different vegetables or fruit. What will happen if you use different nails?
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- Duration:
- 1 ?
- Field:
-
Physics, Chemistry, Biology,
- Tags:
- cell, current, electrolyte, acid, fruit, vegetables
- Posted:
- 11.11.2014
- Opracowanie:
Administrator
Try to carry out the same experiment on a larger and smaller scale. Does water react always the same way?
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- Duration:
- 1 ?
- Field:
-
Physics, Chemistry,
- Tags:
- liquid, water, surface tension
- 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
- 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