Science Fun

Understanding Air Pressure Weather Science Experiment

In this fun and easy weather science experiment for kids, we’re going to investigate and understand air pressure. 

 

Materials:

  • Straw
  • Glass
  • Water



Instructions:

  1. Fill the glass with water.
  2. Put the straw in the water and suck some water about halfway up the straw.
  3. Put your finger over the top of the straw.
  4. Pull the straw out of the water.

 

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How it Works:

The water stays in the straw because the only place air pressure can get into the straw is from the bottom. This holds the water in the straw.

 

Make This A Science Project:

Try a larger diameter straw like a milkshake straw. Try adding a drop of dish soap to the water. Try tilting the straw. 

 

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