Experiment of the Week: Pop a Balloon Inside a Balloon

Pop a Balloon Inside a Balloon


  • Magnifying Glass
  • Black Balloon
  • Clear Balloon

STEP 1:  Push the black balloon inside the clear balloon. Inflate the black balloon. Tie the black balloon.

STEP 2:  Inflate the clear balloon, so the black balloon can move freely inside the clear balloon. Tie the clear balloon.

STEP 3:  Using the magnifying glass, focus the sun’s rays through the clear balloon, to the black balloon, and observe. Describe what happens when you place the clear balloon in the path of the rays of sunlight. Provide evidence that energy was transferred to the black balloon by the rays of sunlight.


The black balloon quickly pops. The magnifying glass allows you to concentrate the sun’s rays through the transparent balloon to one spot on the opaque or black balloon, which eventually weakens the rubber, causing the balloon to pop. The black balloon pops while the transparent balloon stays inflated. The black balloon absorbs the sun’s rays causing the balloon to heat up faster. Go to www.hookedonscience.org for more experiments that might get you and your family “Hooked on Science.”