What does Temperature refer to?

• A. The speed of an object in a particular direction.
• B. The force applied to a unit area of surface.
• C. The capacity to do work.
• D. Degrees of something in Celsius or Fahrenheit.

Answer: (D)

Temperature is a measure of how hot or cold something is, and it’s expressed as degrees on scales like Celsius, Fahrenheit, or Kelvin. It reflects the average kinetic energy of the particles in a substance—when temperature rises, particles move faster on average. The description that talks about degrees on the Celsius or Fahrenheit scale directly captures this idea. The other concepts describe different things: speed is how fast something moves, pressure is force per unit area, and energy or the capacity to do work is about work or energy, not how hot or cold something is.