Physics Over the Sink: Water Glass Magic

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In this simple demonstration, learners investigate the properties of air pressure. Learners place an index card on top of a glass full of water, then invert the glass. The surface tension of the water and air pressure keep the card in place.

Quick Guide

Preparation Time:
Under 5 minutes
Learning Time:
5 to 10 minutes
Estimated Materials Cost:
free per student
Age Range:
Ages 8 - 14
Resource Type:
Activity
Language:
English

Materials List (per student)

  • A glass full of water
  • A note card
  • A sink

Keywords

Subjects

  • Earth and Space Science
    • Earth Structure
      • Atmosphere
  • Physical Sciences
    • Motion and Forces
    • States of Matter
      • Liquids
  • The Nature of Science
    • The Scientific Process
      • Asking Questions
      • Conducting Investigations

Informal Categories

  • Science Festivals Activity

Audience

To use this activity, learners need to:

  • see
  • touch

Learning styles supported:

  • Involves hands-on or lab activities

Other

This resource is part of:

Access Rights:

  • Free access

By:

  • American Physical Society

Rights:

  • All rights reserved, American Physical Society, 2012