Science Exercises Air Friction

Science Exercises for Science Teachers - Air and Friction assignments.

Science Exercises for Science Teachers - Air and Friction

Get students to explain the following :

• How ink may be drawn up into a medicine dropper such as is used in filling a fountain pen.
• How lemonade may be sucked through a straw.
  
  Why olive oil or any other liquid can readily be poured from a small opening in a can if there is another opening above the liquid, but will not flow evenly if this opening is closed.
  
  
• Why a fountain pen frequently leaks when it is nearly empty.
• Why the raising of the ribs and lowering of the diaphragm of the body causes air to flow into the lungs.

• Why two pieces of wet glass stick together.
• The action of non-skid automobile tires.
• The ability of basket ball players to keep from slipping on the smooth floor of a gymnasium.
• Action of the ordinary suction pump. How high will such a pump lift water ?
• How air pressure may help in removing liquids from casks or large bottles (siphoning).
• Action of a vacuum cleaner. Why is its use advisable?
• Why one's hat is apt to be carried off as a swiftly moving train passes.

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