Conduction, Convection, & Radiation Part II CRCT Prep.

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Presentation transcript:

Conduction, Convection, & Radiation Part II CRCT Prep

Burt's mother asked him to use a spoon to stir the stew that was cooking on the stove. Which spoon will stay the coolest while he stirs? A. an iron spoon B. an aluminum spoon C. a wooden spoon D. a silver spoon

Through which of the following materials does heat travel the fastest? A. glass B. metal C. plastic D. wood

Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot? A. The hot water causes a chemical reaction to take place in the spoon. B. The heat from the hot water is conducted to the spoon handle. C. The hot water heats the air surrounding the upper part of the spoon. D. The hot water causes a physical change in the spoon handle.

A block of ice on a glass plate is put on a metal shelf in a freezer. Which could cause the ice to change to liquid water? A. putting a fan that blows on the ice inside the closed freezer B. raising the temperature inside the freezer C. wrapping a blanket around the ice inside the freezer D. putting the ice directly on the metal shelf inside the freezer

When it is very hot in his room, Stuart tries to make it cooler by opening both the top and the bottom of his window. Which statement best explains why this would work? A. Air comes in the top to cool the ceiling and in the bottom to cool the floor. B. Cooler air comes in the bottom and warm air goes out through the top. C. Warmer air goes out through both the bottom and top. D. It does not make any difference because if there is no wind, the air will not come in.

What is the process by which heat energy gets to Earth from the Sun? A. conduction B. radiation C. subduction D. convection

Patti used a steel wrench to work on her bicycle on a hot, sunny day. She left the wrench on the hot concrete surface for an hour while she had lunch. When she returned, the wrench was very hot to touch. What is the best explanation for how the wrench got so hot? A. Heat transferred from the concrete to the wrench. B. Heat transferred from the wrench to the air. C. Heat transferred from the bicycle to the wrench. D. Heat transferred from the wrench to the concrete.

Which best explains how the food on the stove is being heated? A. conduction B. convection C. interaction D. radiation

Expansion joints such as these are put on bridges because the concrete expands and contracts. This happens when A. chemicals get on the concrete. B. the temperature changes. C. the amount of light changes. D. the concrete gets wet.