"How Air Conditioners Make Cities Hotter"

What causes differences in air temperature?

• how fast the wind is moving

• how fast the molecules are moving

• how close the sun is to earth

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How do air conditioners work?

• they blow cold air

• they reduce the temperature in a hot room

• they slow down the speed of the molecules

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True or False energy can't be created nor destroyed.

• True

• False

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True or False? Air conditioners make the air outside hotter?

• True

• False

How does running an air conditioner make things hotter.

• They slow down the speed of the molecules in the room and the energy gets transferred to the molecules in the air outside.

• They use up a lot of electricity which makes things hotter.

• The slow moving molecules make things hotter since when molecules move slowly they have a high temperature.

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What happens when faster molecules bump into slower moving molecules?

• The slower moving molecules will slow down.

• The faster moving molecules will speed up.

• Kinetic energy transfers from the fast moving molecules to the slow moving molecules causing them to move faster.

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What happens when things of different temperature come into contact?

• Energy moves from the hot item to the cool item until both are the same temperature.

• The hot item will remain hot and the cool item will remain cool.

• Energy will continue to go back and forth between the two items.

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