The term that describes how hot or cold an object is known as temperature. Temperature is a physical property of matter that measures the average kinetic energy of the particles in a substance. It quantifies the degree of thermal energy present in a system. Temperature is commonly measured using a thermometer in units such as degrees Celsius (°C), degrees Fahrenheit (°F), or Kelvin (K).

The temperature of an object is related to the average speed at which its particles are moving. Higher temperatures indicate faster particle movement, while lower temperatures indicate slower particle movement. Temperature is a crucial parameter in various scientific fields, including physics, chemistry, thermodynamics, and engineering.