We've been learning about temperature in
science therefore we thought it would be useful to make our own thermometers so
we could get a clear understanding into how they work.
The science
behind a thermometer is that heat makes the mercury expand therefore rising up
the tube. We used a mixture or water and rubbing alcohol and added some food
colouring so we could see more clearly. We placed the mixture into a plastic
bottle and inserted a straw. After that we made the bottle air tight using
Playdoh. Finally we placed out homemade thermometers into hot water and watched
the liquid rise up the straw. We were massively impressed that they worked so
well!
