Blogs and News - St George's School For Girls, Edinburgh

13 Oct 2021
Excellent Eruptions!

P6Volc2021 7 sLast week, the P6 classes made volcanoes in the Science Labs as part of their topic on the structure of the Earth. It was exciting being in the Labs and getting to use some of the equipment. We got to wear lab coats and safety goggles to do the experiment.

We shaped our volcano cones with plasticine around a beaker and dripped in some drops of red food colouring. Then we poured in some washing up liquid and filled the beaker up to half full of bicarbonate of soda. To make it explode, we finally squeezed in some vinegar.

The experiment worked because the alkali (the bicarbonate of soda) and the acid (the vinegar) made a chemical reaction and created bubbles of carbon dioxide gas which pushed the liquid out the top of the beaker. The washing up liquid foamed up and the red food colouring gave it the colour of the lava, which poured out of the top of the volcano.

Everyone really loved it! Here are what some of my friends thought:

“It was fun, and I loved doing the experiment.”

“It was interesting to learn about the explosion.”

“It was fantastic when the foam went everywhere!”

“I absolutely love that the teachers prepared it for us!”

This week we are going to Dynamic Earth and on our GeoWalk on Arthur’s Seat. We are looking forward to learning more about our planet and, of course, we can’t wait till we next get to go to the Labs!

Alina (Primary 6)

 

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