Key Concepts
Unit 1
Unit 2
Unit 3
Key Concepts 2
100

What is scarcity?

Limited sources and unlimited wants

100

What does PPC stand for?

Production Possibility Curve 

100

What usually happens to demand when price falls?

Demand Increases

100

What are the main functions of money?

Medium of exchange, store of value, unit of account.

100

What is meant by productive efficiency?

Producing at the lowest possible cost.

200

What are the 4 factors of production?

Land, Labour, Capital, and Enterprise

200

What happens to opportunity cost as more resources are moved to one good?

Opportunity cost increases.

200

What is equilibrium price?

The price where demand equals supply.

200

What is division of labour?

Workers specialize in specific tasks.

200

If PED is greater than 1, demand is described as what?

Price elastic

300

What is opportunity cost?

The next best alternative given up.

300

Give one example of capital as a factor of production.

Machinery, tools, or factories.

300

What does PED measure?

Responsiveness of demand to a price change.

300

What is the equation for/what is total revenue?

Price × Quantity sold.

300

Why are public goods considered a market failure?

Because private firms may not provide them since people can use them without paying.


400

Why does every economy face the basic economic problem?

Because resources are limited but wants are unlimited.


400

What does a shift outward of a PPC show?

Economic growth or increased resources.

400

Explain one reason why supply may increase.

Lower production costs, subsidies, or improved technology.


400

What is a monopoly?

A market with one dominant seller.

400

Explain one reason why supply may decrease.

Higher production costs, taxes, or fewer firms in the market.


500

What does a point inside a PPC show?

Unemployment or inefficient use of resources.

500

Explain why opportunity cost increases on a PPC.

Resources are not equally efficient in producing all goods, so more resources must be sacrificed.

500

Why can market failure occur in a free market economy?

Because resources may be overproduced or underproduced, causing inefficient allocation.

500

What is one advantage of large-scale production?

Economies of scale/lower average costs.

500

A product has PED of -2. What does this mean?

A 1% increase in price causes a 2% decrease in quantity demanded.

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