Activity: Fluidity

Objective

  • To discover that air has fluid properties and takes up space.

Materials

  • A glass
  • Dry handkerchief or tissue
  • Large deep bowl of water

Procedure

  • Push the dry handkerchief into the bottom of the glass so that it will not fall out when the glass is turned upside down.
  • Turn the glass upside down and holding it vertically, push the glass into the jar of water until completely covered.
  • Now, lift the glass straight up and out of the water.
  • Turn it right side up.
hand pushing a hankerchief in a glass    hand pushing a hankerchief in a glass in a bowl of water    hand removing a hankerchief from inside a glass

Observation

  • The handkerchief is completely dry.

Question

  • Why isn�t the handkerchief wet? (The air took up space and kept the handkerchief from getting wet).

Conclusion

  • The air inside the glass took up space which is a property of fluid.