What you'll need

  • kidsactivities_lava_glass image

    A tall glass or jar

  • kidsactivities_lava_water image


  • kidsactivities_lava_oil image

    Vegetable or baby oil

  • kidsactivities_lava_colouring image

    Food colouring

  • kidsactivities_lava_tablet image

    Soluble tablet (Alka-seltzer or similar)

Step 1

Fill the glass or jar 1/4 with water.

Step 2

Add around 3 drops of food colouring, and give it a stir.

Step 3

Add 1/4 oil to the glass or jar and watch how the coloured water and the oil don’t want to mix!

Step 4

Add the soluble tablet and watch as it bubbles through the water and tries to mix the water and oil.

Download & Donate

Download a step-by-step worksheet for this activity.

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Download a step-by-step worksheet for this activity (PDF)

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