Hanford at the Half-Life Radiation Calculator

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This quiz lets you estimate your annual radiation exposure. It asks you about where you live (altitude, location, type of house) and what you do (how often you travel by airplane, medical info, and household activities). From that, it calculates how much radiation you are exposed to in the course of your day-to-day activities. At the end of the quiz your exposure is compared to the U.S. average of 360 mrem per year. It also includes information about how much nuclear facility workers are typically exposed to (an extra 12 mrem per year), as well as the legal maximum amount for radiation workers (5000 mrem per year). Hanford is a nuclear production site in Washington State.

Quick Guide

Preparation Time:
Under 5 minutes

Learning Time:
10 to 30 minutes

Estimated Materials Cost:
free per student

Age Range:
Ages 8 - 18

Resource Types:
Activity, Game


Materials List (per student)

  • Computer with internet access


  • Earth and Space Science
    • Earth Processes
      • Geochemical Cycles
  • Engineering and Technology
    • Engineering
      • Nuclear Engineering
  • Life Sciences
    • Human Body
      • Health and Nutrition
  • Physical Sciences
    • Chemistry
      • Nuclear Chemistry
    • Structure and Properties of Matter
      • Elementary Particles and Nuclear Physics
  • The Nature of Science
    • Science as a Career
  • The Nature of Technology
    • Technology and Society
      • Impacts of Technology


To use this activity, learners need to:

  • see
  • read
  • use mouse

Learning styles supported:

  • Uses STEM to solve real-world problems
  • Involves hands-on or lab activities


Access Rights:

  • Free access



Funding Source:

  • US Department of Energy