How to Make an Erupting Volcano With Vinegar or Salt

Build a Volcano

• 1

  Stand the empty bottle up on its base in a box or on a work area you don't mind getting dirty.

• 2

  Surround the bottle with wet sand to create a mound. Make sure the bottle mouth remains reachable.

• 3

  Cover the sand with paper and paint a landscape on it, decorate the sand, or paint a background setting for the volcano.

Make an Eruption out of Vinegar and Baking Soda

• 4

  Pour one-quarter cup vinegar into the bottle. If it's easier, you can do this before building the sand mound.

• 5

  Add 2 tbsp. baking soda quickly.

• 6

  Stand back and wait for the eruption.

Make an Eruption out of Salt and Diet Soda

• 7

  Replace the empty plastic bottle with a full bottle of diet soda.

• 8

  Add 2 tbsp. salt to the bottle quickly.

• 9

  Stand back and wait for the eruption.