Floating and Sinking Lab

4.7
Physics

Discover which objects float or sink through hands-on water experiments

30 mins

Duration

Ages 3-6

Age Range

Easy

Difficulty

Materials Needed
  • Large clear container
  • Water
  • Various small objects
  • Towels
  • Notebook for recording
Step-by-Step Instructions
  1. 1

    Fill large container with water

  2. 2

    Gather various objects: coins, corks, toys, fruits, etc.

  3. 3

    Before testing, predict whether each item will float or sink

  4. 4

    Gently place each object in water and observe

  5. 5

    Record results and compare to predictions

  6. 6

    Discuss why some things float and others sink

Safety Tips
  • Use only safe, non-toxic objects
  • Have towels ready for spills
  • Supervise around water at all times
  • Choose objects too large to be choking hazards
Learning Goals
Scientific predictionObservation skillsDensity conceptsData recording
Fun Variations
  • Test objects made of different materials
  • Try changing water temperature
  • Add salt to water and test same objects