Temperatures (Hot and Cold)

We can use our fingers, our tongue, or almost any part of our skin to feel just how hot or how cold something is. This is important because our bodies need just the right amount of heat so that we can live comfortably.

When it’s cold and we want to make a room warmer, we turn on the heaters. In the summer when it’s hot and we want to make the room cooler, do we add cold to the room?

No. We take away some of the heat. We say something is cold when it doesn’t have much heat. The less heat it has, the colder it is.

Air conditioners suck hot air from a room. Pipes inside the air conditioners take a lot of heat out of the air, making it cold. Then a blower fans the cooled air into the room again.

When we want to know exactly how hot or how cold something is, we use a thermometer. A thermometer tells us about temperature—that is, how hot something is. Some countries measure temperature in “degrees Fahrenheit (° F).” Others use a different measuring system of “degrees Celsius (° C).”

We can use thermometers to measure air temperature, oven temperature, even body temperature. And your body temperature tells not only whether you feel hot or cold but whether you’re healthy. []

TM. Noumi

Indonesia, 17 Maret 2016