The fundamental definition of temperature is a measure of the average kinetic energy of the particles in a substance. This means that temperature is a measure of how fast the particles are moving within a substance.
Temperature and heat are closely related, but they are not the same thing. Heat is the transfer of energy from a warmer object to a cooler object, while temperature is a measure of the average kinetic energy of the particles within a substance.
The standard unit of measurement for temperature is the Kelvin (K) scale. However, other common units include Celsius (°C) and Fahrenheit (°F).
As temperature increases, the particles within a substance gain more kinetic energy and move faster. This can lead to changes in the physical state of the substance, such as melting or boiling.
Yes, temperature can be negative on the Kelvin and Celsius scales. This indicates a temperature below absolute zero, which is the lowest possible temperature and represents the absence of all kinetic energy in a substance.