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Lesson 4: Buoyant Butter

DESCRIPTION
The density of a stick of butter is calculated to determine if it will sink or float in water.

OBJECTIVE
This lesson teaches students about density, how to calculate it, and how it is related to determining whether an object will sink or float.

CONTENT TOPICS
Properties of matter (density)

Lesson 4 : Buoyant Butter

DOWNLOAD LESSON PLAN

LIST OF MATERIALS

  1. One stick of butter or margarine (with the wrapper on)
  2. Metric ruler
  3. Large bowl or container

REVIEW GAME

HYPOTHESIS

Density can be calculated using the mass and volume of an object. If an object is denser than the water it displaces, it will sink.
If an object is less dense than the water it displaces, it will float.