Final answer:
Spatial dimensions refer to the different directions or axes in which objects or events can be located in space, and in physics, we often use three spatial dimensions: length, width, and height.
Step-by-step explanation:
Spatial dimensions refer to the different directions or axes in which objects or events can be located in space. In physics, we often use three spatial dimensions: length, width, and height. These dimensions allow us to describe the position and movement of objects or events in a 3-dimensional space. For example, we can use spatial dimensions to map large parts of the universe, where we not only need to know the position of each galaxy on the sky (2 dimensions) but also its distance from us (the third dimension).