Final answer:
Shifts in demand or supply curves occur due to changes in factors affecting demand or supply. Movements along the curve occur due to changes in price.
Step-by-step explanation:
Difference between shifts of demand or supply versus movements along a demand or supply curve:
Shifts in the demand or supply curve occur when there is a change in factors affecting demand or supply, such as income or production costs. This leads to a new equilibrium price and quantity.
Movement along the demand or supply curve, on the other hand, occurs when there is a change in price, resulting in a change in quantity demanded or supplied while other factors remain constant.