lava lamp

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make a lava lamp


empty plastic bottle with lid
cheap veg oil
food colouring
alka seltzer or similar product


- Fill 1/2 the bottle with oil and another 1/4 with water
- Add a splash of food colouring
- Each child then puts the alka seltzer into the bottle and the oil and food colouring make
the same effect as a lava lamp would


  • experiment
  • lamp and stove
  • lava
  • science

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