School Project: How to Make a Volcano That Blows Ash


Volcanoes are places on the earth's surface where molten rock, gases and pyroclastic debris erupt through the earth's crust. Many volcanoes are in the shapes of domes or mountains. Magma is molten rock within the earth's crust that becomes lava when it erupts. Rock also comes from volcanoes in the form of ash, finely powdered rock that looks like dark smoke. Just a few steps can help you to create your own model volcano that erupts and blows ash.

Things You'll Need

  • Newspapers
  • Large aluminum cookie sheet
  • Cardboard
  • Plastic film canister with lid
  • Glue
  • Measuring cups and spoons
  • Graduated cylinder
  • 6 cups of flour
  • 2 cups of salt
  • Mixing bowl
  • Water
  • Paint (brown, green and white)
  • Alka-Seltzer tablet
  • Real volcanic ash or cornstarch powder
  • Select a spot in your backyard, and lay newspapers over the work area. Place a large cookie sheet on the newspaper, and place a piece of cardboard inside of the sheet to serve as your volcano base. Then, glue the bottom of the plastic film canister to the center of the cardboard platform. Allow the glue to dry for an hour.

  • Mix the flour and salt in a bowl and add one to two cups of water until you have a clay-like consistency. Mix the combination with your hands, making sure the mixture is moist but dry enough to cure quickly.

  • Mold the clay mixture around the base of the plastic film canister until you get to the top of the canister. Make sure the base of your volcano is wider than the top part, which should be narrow. Allow this mixture to dry completely. Make sure the inside of the mixture is not too wet or else the weight will cause the clay to break away from the canister.

  • Next, make lava channels and erosion gullies in the clay and paint the clay mixture brown. You also can use green paint to paint areas of trees or white paint to place snow on the top of the volcano.

  • Place 20 ml of water in the plastic film canister, followed by half of an Alka-Seltzer tablet. Then, quickly and firmly put the canister lid back on, and place one tsp. of real volcanic ash or cornstarch powder on top of the lid. Watch the lid bulge and then blow off violently. You will see the volcanic ash blow everywhere.


  • Photo Credit Volcano image by wojciechhajduk from
Promoted By Zergnet


You May Also Like

  • How to Make a Paper-Mache Volcano

    Kids love the classic paper-mache volcano experiment because it's visual and exciting. It also perfectly demonstrates a chemical reaction.

  • How to Make a Flaming Volcano Drink

    A Tiki Volcano is a tropical cocktail served in a ceramic bowl with a flaming center. The drink is served with long...

  • How to Make a Clay Volcano

    This is a great activity for summer camps, science fairs or just a boring Sunday at home.

  • How to Make a Volcano Experiment for Kids

    A volcano experiment is an easy, classic and fun way to introduce science to young children. There are several ways to do...

  • How to Make a Volcano at Home

    Making your own volcano at home can be fun and educational for your whole family. Children will enjoy seeing your volcano erupt...

  • How to Make a Model of a Composite Volcano

    Composite volcanoes, also known as stratovolcanoes, combine the defining characteristics of both cinder cone and shield volcanoes. Composite volcano eruptions produce both...

  • How to Make a Volcano

    Make a lava-spewing volcano as a science project or just for fun. If you have children, let them help you because this...

  • Information on Volcano Projects

    The baking soda volcano represents the quintessential science fair project. To construct a good model volcano, however, a student should understand how...

Related Searches

Check It Out

Can You Take Advantage Of Student Loan Forgiveness?

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!