This deck explores the fundamental economic principle of supply and demand. Learners discover how the interaction between producers and consumers influences prices, availability, and market behavior. The cards explain how shifts in supply or demand affect markets and how this mechanism shapes economic activity.
Flashcards combined with spaced repetition improve active recall. You review at the right time, retain knowledge longer, and track progress card by card.
Card 1
The total quantity all buyers are willing and able to purchase at each price.
Explanation
Market demand aggregates the quantities demanded by all individual buyers at each possible price.
Common mistake
Confusing market demand with the amount people would like to buy if price were zero.
Card 2
The total quantity all sellers are willing and able to offer at each price.
Explanation
Market supply combines all individual sellers’ quantities offered at every possible price.
Common mistake
Thinking market supply is fixed and unrelated to price.
Card 3
They move in opposite directions: a higher price leads to a lower quantity demanded.
Explanation
As a good becomes more expensive, fewer units are typically bought, all else equal.
Common mistake
Believing that raising a price will always increase total units sold.
Card 4
They move in the same direction: a higher price leads to a higher quantity supplied.
Explanation
Higher prices give producers more incentive and ability to offer additional units for sale.
Common mistake
Thinking firms will supply the same quantity regardless of price.
Card 5
Market demand is the sum of quantities demanded by all consumers at each price.
Explanation
We obtain market demand by horizontally adding each individual demand at a given price.
Common mistake
Assuming an individual’s demand curve is identical to the entire market’s demand curve.
Card 6
A change in the ticket price, holding other demand factors constant.
Explanation
Only the good’s own price changing moves you along an existing demand curve.
Common mistake
Treating any change in quantity bought as a movement along the demand curve.
Card 7
A change in the bread price, holding other supply factors constant.
Explanation
Only the product’s own price changing moves you along an existing supply curve.
Common mistake
Calling cost-driven changes in quantity supplied a movement along the supply curve.
Card 8
There is downward pressure on rent because the surplus of apartments pushes prices down.
Explanation
A price above equilibrium creates excess supply, motivating landlords to cut rents to attract tenants.
Common mistake
Assuming a higher-than-equilibrium price will automatically create a shortage.
Card 9
There is upward pressure on price because the shortage pushes prices higher.
Explanation
A price below equilibrium creates excess demand, encouraging sellers to raise prices.
Common mistake
Believing low prices will always be stable even if many buyers cannot find the product.
Card 10
Quantity demanded exceeds quantity supplied, creating pressure for the price to rise.
Explanation
When buyers want more units than are available at the current price, competition among them bids prices up.
Common mistake
Thinking a shortage means shelves are always empty regardless of price changes.
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