Water
The yellow is a dry/desert area and the red is the volcano region.
We made three volcanoes in different colours to see how different it would look with the red lava flowing down them.
Add in the baking soda.
And have the white vinegar ready (we used red food colouring to make it "lava" red).
And then pour!
This was so exciting for Munchkin and Bean! Bean really enjoyed helping me press and mold the volcano world. Munchkin did most of the texture work, pressing the shells into the Play-Doh and using his fingers and knuckles to make the Play-Doh bumpy and holey. I helped make the bases of the volcanoes and then they made the holes. I added the baking soda and poured the vinegar.
Bean was the first to touch the "lava". She giggled and loved feeling the bubbles touch her hands. Munchkin walked the dinosaurs through the lava and was amazed that they left footprints that quickly filled up with lava. After that they both made many dinosaur tracks! The dinosaurs also enjoyed drinking from the volcanoes :)
The textured Play-Doh did not direct the flow of the lava in any particular way, but it was interesting to see how it filled in those regions. The bumpy yellow area filled up first and left many lava puddles. The green forest area was largely untouched. The blue ocean area was where most of lava went after erupting.
Just a note, the Play-Doh we used was brand new and we did not wait for it to dry before testing out our volcano world. In our last volcano experiment we used painted clay and allowed it to dry and it worked wonderfully. This volcano world ended up very wet and mushy after several eruptions, but that was fine with us because they enjoyed mashing the Play-Doh together and remaking the volcanoes.
The words we learned today: volcano, erupt/eruption, dormant, lava.
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