Final answer:
Radiopaque objects absorb some but not all of the x-rays that strike them, while radiolucent objects allow x-rays to easily pass through without much absorption.
Step-by-step explanation:
An object that absorbs some but not all of the x-rays that strike it is considered radiopaque. Radiopaque objects are those that do not allow x-rays to easily pass through and absorb a significant amount of the radiation.
For example, lead is a commonly used material for shielding against x-rays because it is highly radiopaque. When x-rays encounter lead, they are absorbed rather than passing through, which helps protect individuals from exposure to harmful radiation.
In contrast, radiolucent objects allow x-rays to easily pass through without much absorption. These objects do not obstruct the path of x-rays, allowing them to reach the detector and create an image.