Answer the following question given this paragraph: This is how ice wedging works. When liquid water changes into solid ice, it increases in volume. You see this when you fill an ice cube tray with water and put it in the freezer. The ice cubes go to a higher level in the tray than the water. You also may have seen this if you put a can of soda into the freezer so that it cools down quickly. If you leave the can in the freezer too long, the liquid expands so much that it bends or pops the can. (For the record, water is very unusual. Most substances get smaller when they change from a liquid to a solid. ). Q: Do most substances increase or decrease in size when they change from a liquid to a solid? Choices: - increase - stay the same - it is unable to be measured - decrease A:
decrease
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Answer the following question given this paragraph: Body waves travel through the Earth and arrive at seismograms before surface waves. Q: Body waves travel through the earth and arrive at seismograms before what? Choices: - sound waves - velocity waves - function waves - surface waves A:
surface waves
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Answer the following question given this paragraph: Mercury manometers are often used to measure arterial blood pressure. An inflatable cuff is placed on the upper arm as shown in Figure 11.17. By squeezing the bulb, the person making the measurement exerts pressure, which is transmitted undiminished. Q: What are mercury manometers often used to measure? Choices: - weight - balance - brain waves - blood pressure A:
blood pressure
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Answer the following question given this paragraph: Most of the sounds we hear reach our ears through the air, but sounds can also travel through liquids and solids. If you swim underwateror even submerge your ears in bathwaterany sounds you hear have traveled to your ears through the water. Some solids, including glass and metals, are very good at transmitting sounds. Foam rubber and heavy fabrics, on the other hand, tend to muffle sounds. They absorb rather than pass on the sound energy. Q: Where does most of the sound we hear travel through? Choices: - water - light - the ground - air A:
air
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