Land

• Water “Digs” It!
  Make a model of how water changes our land.
• Disappearing Statues
  See how acid rain eats away at hard materials.
• Magma – All Gassed up to Go!
  Find out why gases in magma can make a volcano blow its top.
• Let's Settle the Matter
  Look closely at soil particles in water to learn about sediment.
• Ground Breaking Idea
  Compare how different types of soil erode.
• Get the Dirt on Soil
  See what makes sand soil different from potting soil.
• Gases – Expanding Possibilities!
  Learn how heat causes air to expand.
• Convection: A New Direction
  Discover what causes magma to move deep within the earth.
• Caves – the Hole Story!
  Use sugar cubes, clay, and flowing water to make your own little cave.
• Soil Sizes – Some Surprises!
  Compare the rate different types of soil sink in water.
• Rain and Drain
  See how quickly or slowly water flows through different types of soil.
• Volcano
  Make a baking soda and vinegar volcano to model an eruption.