Bubbler

Question What would happen if you squeezed an inflated balloon into a straw inserted into a cup of water?

Research 1.Gas is a state of matter. 2.Gas does not have a definite shape. 3.When water gets hot it turns into water vapor. 4.When water turns into water vapor the particles move faster. 5.When water gets cold it turns into ice.

Hypothesis If a straw connects an inflated balloon to a jar filled with water, when air is released from the balloon into the straw, the water will move slightly.

Procedure 1.Fill the jar with water. 2.Place one end of the straw in the water at the bottom of the jar. 3.Inflate the balloon and twist the neck to prevent the air from escaping. 4.Slip the mouth of the balloon over the end of the straw. Hold the balloon securely with your fingers. 5.Untwist the balloon and allow the air to escape slowly through the straw. 6.Watch the end of the straw in the water and notice the movement of the air as it exits the straw.

Independent Variable The release of air from the balloon to the jar of water.

Dependent Variable Observation of how the released air interacts with the water in the jar.

Results When air escaped from the balloon to the jar of water, the entire opening of the jar was filled with bubbling water.

Conclusion The hypothesis that the water would move slightly was not supported. Instead, the water bubbled actively. This probably happened because the force of the escaping air pushed bubbles to the top of the jar.