The temperature tells us how much heat is in the atmosphere. The mercury expands when the temperature is hot, while it falls or contracts when it’s cool. It is measured using a thermometer which is a tool encased in a glass tube that contains liquid mercury. It tells us just how much heat is present in all types of matter, such as water, soil, or air.
Temperature is the numerical estimate of how cold or hot something is. The Significance of Measuring Temperature In this section, you’ll learn a brief history of the thermometer, how standardized scales were developed, and notable temperatures known to man. But to countries using Celsius, that’s a warm, sunny day. You instantly know if it’s colder than usual, or if you’reīut you might have been confused when someone said, “It’s a nice 22 degrees.” In Fahrenheit, that sounds like a cold winter day. These days, when you tap your smartphone, checking the The Thermometer, Standardized Scales, and Temperature Facts
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