Hooked On Science – Levitating Ping Pong Ball

SCIENCE SAFETY
PLEASE follow these safety precautions when doing any science experiment.
• ALWAYS have an adult present.
• ALWAYS wear the correct safety gear while doing any experiment.
• NEVER eat or drink anything while doing any experiment.
• REMEMBER experiments may require marbles, small balls, balloons, and other small parts. Those objects could become a CHOKING HAZARD. Adults are to perform those experiments using these objects. Any child can choke or suffocate on uninflated or broken balloons. Keep uninflated or broken balloons away from children.

INGREDIENTS
• Bendable Straw
• Ping Pong Ball

INSTRUCTIONS
STEP 1: Bend the short end, of the bendable straw, upward.
STEP 2: While blowing through the straw, place the ping pong ball into the stream of air and observe. Provide evidence of the effects of balanced and unbalanced forces on the motion of the ping pong ball.
STEP 3: Gently blow through the straw and observe. Now, with more force, blow through the straw, and observe. Compare the effects of different strengths of pushes and pulls on the motion of the ping pong ball.

EXPLANATION
Multiple forces are acting on the ping pong ball. Gravity pulls the ping pong ball toward Earth while your breath pushes the ping ball upward. Where the forces balance, the ping pong ball floats. The fast stream of air, flowing around the aerodynamic ping pong ball, creates a lower pressure, directly around the ball. The higher pressure, surrounding the ball, forces the ball into the stream of air.

Download these instructions here and check the Hooked on Science page for more science experiments.

Categories: Education, Hooked On Science