shawnee mission school district science fair

SHAWNEE MISSION SCHOOL

DISTRICT SCIENCE FAIR

Bubbler

QuestionWhat would happen if you

squeezed an inflated balloon into a straw inserted into a cup of water?

Research1.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.

Procedure1.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 VariableThe 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.

ResultsWhen air

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

ConclusionThe 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.