Planet Earth

Hands-On Activities

Test Your Knowledge

  • Calcium
    We need calcium for strong bones. But what does calcium have to do with seashells, chalk, and limestone.
  • Dissolving
    Find examples of dissolving in your body, in a cave, and underwater.
  • Earth’s Atmosphere
    Explore the five layers of our planet’s atmosphere.
  • Erosion
    Take a look at how water can change the shape of the world around us.
  • Evaporation and Condensation
    Find examples of evaporation and condensation in nature.
  • Gases
    Take this quiz to find out how gases can save you in a car crash or make a volcano blow its top.
  • Plants
    Compare different plants and learn which part of each plant is best for eating.
  • Soil
    Discover the many ways soil is used to improve everyday life.
  • Static Electricity
    Explore lightning to understand what static electricity is and how it works.
  • Stuff that Sticks
    Find out how plants and animals produce substances that are sticky like glue.
  • Surface Tension
    Examine some pictures to see how water's attraction to itself can create natural works of art.
  • Volcanoes
    Learn about Mt. St. Helens, a volcano in the United States, to understand how volcanoes erupt.
  • Water
    Explore the many ways that water is essential to life on planet earth.