🧪
Experiment

PFD Buoyancy Test

Test what floats and what sinks — and how life jackets keep you up.

30 min Easy

📋 What You'll Need

  • •A pool or calm shallow water
  • •A properly fitting life jacket
  • •An adult supervisor who can swim
  • •Items to test: a coin, a plastic bottle, an apple, a rock

👣 Step by Step

🔍 What to Observe

  • •Which items floated and which sank? Why?
  • •Did the life jacket hold your head above water without effort?
  • •What body position kept you floating best?

💡 Tips & Safety

  • •Only test with a properly fitted, Coast Guard-approved life jacket.
  • •Never test in deep or moving water — always have an adult supervisor.
  • •A life jacket keeps your head above water even if you're unconscious.