Thishomemade thermometer science projectworks because the liquid will expand when warmed and contract when cooled.
Get ready to WOW your kids with thiseasy science experiment!
You want the conatiner to be about 14 full of plain water.
homemade thermometer project
Add a few drops of food coloring.
It doesnthaveto be red, it can be any color you like.
This will hold the straw in place and prevent it from falling farther into the bottle.
making a homemade thermometer
Now take your instant read thermometer and note the temperature.
We took our DIY thermometer outside and got a much higher reading.
Again, use your digital thermometer to note the actual tempearture and make markings on the bottle.
Notice how the liquid either rises or sinks down in the straw.
In warmer temperatures, the liquid will rise.
In cooler temperatures, it will sink.
Weather Activities
Learn how to make an EASY, working homemade thermometer.
This fun science experiment teaches about weather and more with kids!
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