Assignment: Multiple Choice Answer Questions

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Assignment: Multiple Choice Answer Questions

Assignment

Multiple Choice Answer Questions

1. Wind is one of nature's ways of transferring energy through

A) conductionB) convectionC) transmissionD) radiation

2. The neighborhood children are playing and one has lost a pocketful of change. As a result they all decide to do a close inspection of the sidewalk. They notice that there are gaps in between the sidewalk filled with a felt - like material. These gaps will prevent

A) high stress due to electron “collisions”B) high stress due to thermal expansionC) high stress due to brittlenessD) high stress due to the weight of the sidewalk

3. People fighting forest fires carry emergency tents that have shiny aluminum outer surfaces. If there is trouble, a fire fighter can lie under the tent to block the heat from burning trees overhead. The tent helps because

A) conduction carries heat downward toward the fire fighter and the aluminum tent conducts that heat harmlessly into the groundB) radiation carries heat downward toward the fire fighter and the aluminum tent reflects most of that radiationC) convection carries heat downward toward the fire fighter and the aluminum tent blocks most of the heat carried by convectionD) both conduction and radiation carry heat downward toward the fire fighter and the aluminum tent blocks most of that heat

4. You are a mechanic in a garage and are working on a carburetor that is made of metal, has a glass inspection window and plastic gears for the choke. If all three types of material are at the same temperature and each type of material is in contact with the other two, then

A) heat will flow from the plastic to the glass, and from the glass to the metalB) heat will flow from the metal to the glass, and from the glass to the plasticC) heat will flow from the glass to both the plastic and the metalD) no heat will flow between any parts

5. When cooking a potato in a conventional oven it is useful to stick a nail in it, which makes it cook faster. This is because

A) the nail is a good radiator of heatB) the nail promotes convection in the potatoC) the nail is a good conductor of heatD) the nail gets much hotter than anything in the oven

6. A popular classroom demonstration involves placing a paper cup with water in it on a burner, and boiling the water in the cup. Although part of the cup may burn, the part containing the water does not because

A) paper is a poor conductor of heatB) it all happens too quickly for the paper to burnC) the water absorbs most of the heat from the flameD) the evolving steam burns the paper on the cup above the water line

7. Some scientists assert that there would be no life on earth if ice did not have a molecular structure with a lot of open space because

A) ice would be so light that it could never form, leaving too much water on the Earth's surfaceB) ice would be less dense ...
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