what is a thermometer
A thermometer is a device that measures the temperature of things. The name is made up of two smaller words: Thermo means heat and meter means to measure. You can use a thermometer to tell the temperature outside or inside your house, inside your oven, even the temperature of your body if you're sick.here is usually a bulb at the base of the thermometer with a long glass tube stretching out the top. Early thermometers used water, but because water freezes there was no way to measure temperatures less than the freezing point of water.