Physics in a Glass: Reversing Arrows

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In this simple activity, learners investigate refraction by placing a picture of an arrow behind a glass of water. Learners may be surprised when a left-pointing arrow is reversed when viewed through a glass of water. Use this activity to introduce properties of refraction.

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 filled with water
  • A note card
  • A marker

Keywords

Subjects

  • Physical Sciences
    • Vibration and Waves
      • Light and Optics
    • Light and Optics
      • Reflection and Refraction
  • The Nature of Science
    • The Scientific Process
      • Asking Questions
      • Conducting Investigations

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