Temperature and Thermal Energy

Why do sidewalks and driveways have separators in them?

• So they are easier to remove and repair

• To allow them to expand in summer and contract in winter without cracking

• To save on the cost for concrete when pouring over large surfaces

• The gaps allow heat from below the ground to rise up and melt ice and snow in the winter

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Sand on the beach is hotter than water in the lake because it takes less energy for the sun to heat it. Sand has a lower ____________ than water

• Caloric content

• Thermal energy

• Temperature

• Specific heat

The handle of an iron skillet gets very hot on the stove. That is because the metal handle is a good

• Insulator

• Conductor

• Mediator

• Transmitter

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This frying pan has a PLASTIC handle which doesn't get as hot, because plastic is a good

• Insulator

• Conductor

• Mediator

• Transmitter

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Molecules do THIS when they heat up

• Move faster

• Move closer together

• Get larger

• All of the above

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A golfer hits a ball across a green, and it stops JUST BEFORE it went in the hole. Why did it stop moving?

• It ran out of energy

• A constant force was necessary to keep it moving across the green

• Friction caused it's mechanical energy to turn into heat energy

• The force of gravity balanced out with the putter's force which cancelled out the ball's motion

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Which temperature scale uses Absolute Zero as its standard?

• Fahrenheit

• Celsius

• Kelvin

• Hendrix

Mr. Johnson's cheap cooler only kept his soda cold for 6 hours (before all the ice melted). Why?

• The heat energy inside the cooler went to the outside

• The coldness escaped to the outside of the cooler

• The heat energy outside the cooler went to the inside

• Plastic is a poor insulator of heat energy

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Mrs. Johnson got him a Yeti cooler for Valentine's Day- which keeps soda cold ALL WEEKEND! Why does it work better?

• It is a much better conductor of heat energy

• It prevents air molecules from getting inside the cooler

• It stops the motion of molecules inside the cooler

• It is better insulated to prevent heat energy from getting inside

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What Law states that energy can't be CREATED or DESTROYED, but it can be CHANGED?

• Kinetic Law of Matter

• Law of Conservation of Energy

• Law of Gravity

• Law of Equivalent Energy

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