short-term memory is limited in duration and capacity
Explanation:
Short-term memory: In psychology, the term "short-term memory" is described as one of the parts of the "information processing model" which was introduced by Atkinson and Shiffrin.
Short-term memory is also referred active or primary memory and is determined as the capacity of an individual's brain to hold, yet not manipulating the specific amount of a piece of information in his or her mind in the active form, so that it can be present in a readily available form for a short duration.
The duration of short-term memory of an individual related to any specific events or situations lasts for about thirty seconds to a few days.
We see the moon as we see today only because sunlight reflect it back to us from it's surface. Depending on how much sun light it is, the reflected part sometime is only half a circle, quarter if circle, etc