Celsius, Fahrenheit, and Kelvin are three ways to measure temperature. Let’s break them down:

1. Celsius (°C):

   • Water freezes at 0°C.
   • Water boils at 100°C.

2. Fahrenheit (°F):

   • Water freezes at 32°F.
   • Water boils at 212°F.

3. Kelvin (K):

   • The lowest possible temperature is 0 K (which is -273.15°C).
   • Water freezes at 273.15 K.
   • Water boils at 373.15 K.

How We Measure Temperature:

• Thermometers: These tools use liquids like mercury to show temperature.
• Thermocouples: These devices measure temperature by using the electricity made at the joints of different metals.

Now you know the basics of temperature scales and how we measure them!