Here's why:
* Kinetic Energy: The motion of molecules is directly related to their kinetic energy. The faster the molecules move, the higher their kinetic energy.
* Temperature as a Measure: Temperature is a measure of the average kinetic energy of the molecules in a substance.
* Higher Temperature = More Motion: A higher temperature indicates that the molecules are moving faster on average.
* Lower Temperature = Less Motion: A lower temperature indicates that the molecules are moving slower on average.
Important Note: While temperature measures the average kinetic energy, individual molecules within a substance will have different speeds.
