Waterproof Hanky

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In this physics demonstration, learners will be surprised when a handkerchief holds water in an upside-down glass. They will be especially shocked when you hold the glass over their head and nothing leaks out! Use this demonstration to introduce learners to surface tension and air pressure. This instruction guide includes a helpful video illustrating each step of the demonstration.

Quick Guide

Preparation Time:
Under 5 minutes
Learning Time:
Under 5 minutes
Estimated Materials Cost:
free per group of students
Age Range:
Ages 4 - adult
Resource Types:
Activity, Demonstration
Language:
English

Materials List (per group of students)

  • large glass
  • ashtray or similar
  • water
  • handkerchief

Keywords

Subjects

  • Physical Sciences
    • Motion and Forces
      • Gravity
    • Structure and Properties of Matter
  • The Nature of Science
    • The Scientific Process
      • Conducting Investigations

Audience

To use this activity, learners need to:

  • see

Learning styles supported:

  • Involves hands-on or lab activities

Other

This resource is part of:

Access Rights:

  • Free access

By:

Rights:

  • All rights reserved, Institute of Physics,