GACE Physics Practice Exam 2025 - Free Physics Practice Questions and Study Guide

Question: 1 / 400

Which of the following quantities has magnitude only, without direction?

Velocity

Force

Temperature

Temperature is a scalar quantity, which means it possesses magnitude only and does not involve direction. Unlike vector quantities such as velocity, force, and acceleration, which all require both a magnitude and a direction to fully describe them, temperature measures the degree of heat of a substance or the intensity of thermal energy present.

For example, when we say the temperature is 25 degrees Celsius, we do not need to specify any direction; this measure is complete on its own. In contrast, velocity describes an object’s speed in a specific direction, force represents a push or pull acting in a particular direction, and acceleration indicates the change in velocity per unit of time and also requires a directional component. Thus, temperature distinctly stands out as a quantity that inherently lacks direction, confirming it as the correct choice.

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Acceleration

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