Air Conditioners: Coolest Idea Ever

What problem did the first air conditioning system aim to solve for a New York publishing company?

• To keep employees cool and comfortable.

• To prevent magazine pages from wrinkling and ink from blurring.

• To reduce the company's electricity bill.

• To make the printing machinery run faster.

How does an air conditioner reduce the humidity in the air?

• By adding more water vapor to the air.

• By heating the air to evaporate water.

• By causing water vapor to condense into liquid.

• By filtering out water molecules directly.

What fundamental thermodynamic principle explains how air conditioners move heat?

• Heat energy flows from cold areas to hot areas.

• Heat energy flows from hot areas to cold areas.

• Heat energy is created and destroyed within the system.

• Heat energy is converted into electrical energy.

Why did manufacturers stop using chlorofluorocarbons (CFCs) in air conditioners?

• CFCs were too expensive to produce.

• CFCs were highly flammable and dangerous.

• CFCs were found to deplete the Earth's ozone layer.

• CFCs made air conditioners less efficient.