What terminology is used to describe when the quantity demanded changes due to price changes only?

The terminology that describes when the quantity demanded changes due to price changes only is referred to as a movement along the demand curve. When the price of a good or service changes, it affects the quantity that consumers are willing to buy, leading to a shift from one point to another along the same demand curve. This reflects the law of demand, which states that there is an inverse relationship between price and quantity demanded: as prices decrease, the quantity demanded generally increases, and vice versa.

In this context, the demand curve itself remains unchanged; only the quantity demanded varies in response to a change in price. This distinction is crucial in economic analysis, as it differentiates between movements along the curve, which are solely price-induced, and shifts of the entire demand curve, which occur due to factors other than price, such as changes in consumer preferences or income levels. Understanding this concept is essential for analyzing market dynamics effectively.