User login

Root Beer Float

Source Institutions

    Colorado State University

Add to listGo to activity
Root Beer Float

In this quick activity/demonstration about density, learners examine what happens when two cans of root beer--one diet and one regular--are placed in a large container of water. Do they sink or float? Use this activity to introduce learners to the importance of density as well as the nutritional content of soft drinks.

Quick Guide

Preparation Time:
Under 5 minutes

Learning Time:
Under 5 minutes

Estimated Materials Cost:
1 cent - $1 per group of students

Age Range:
Ages 4 - 14

Resource Types:
Activity, Demonstration


Materials List (per group of students)

  • One can of root beer
  • One can of diet root beer
  • A large container of water. A deep sink or bathtub full of water will work fine.


  • Life Sciences
    • Human Body
      • Health and Nutrition
  • Mathematics
    • Measurement
  • Physical Sciences
    • Structure and Properties of Matter
      • Volume and Density
  • The Nature of Science
    • The Scientific Process
      • Conducting Investigations
      • Formulating Explanations

Informal Categories

  • Food and Cooking


To use this activity, learners need to:

  • see
  • touch

Learning styles supported:

  • Involves hands-on or lab activities


This resource is part of:

Access Rights:

  • Free access



  • All Rights Reserved, Little Shop of Physics, ©2009


User Lists

This resource is part of these lists: