Friday, June 11, 2010

The Use of Properties of Matter in everyday life

1. Transporting logs
  • Logs are transported from the forest through rivers to the sawmill
  • Logs float because less denser than water
2. Hot air balloon
  • It rises in the air when the hot air in the balloon is less dense than the surrounding air
  • It falls when the cooled air in the balloon is denser than the surrounding air
3. A submarine
  • It can be made denser or less dense than the surrounding water by pumping water in and out of it
  • Hence, it can float or sink in water
4. A raft
  • A raft is made of bamboo or logs
  • A rat floats because bamboo or logs are less dense than water

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