Thermometers measure temperature. The first known accurate thermometer was invented about 350 years ago. In this activity, you will be building and calibrating your own bulb thermometer. Make your ...

When you think of a thermometer, you might imagine a thin glass tube with mercury, but it turns out we can make our own thermometer with items that are mostly found just around the house. Our ...

Step 1: Put several drops of food coloring in the glass bottle. Red will give it the look of a traditional thermometer. Then fill the rest of the bottle to the rim with water. You may want to do this ...