Quiz Answer Key and Fun Facts
1. Which of these measurement devices would you find in the produce section of your local supermarket (or at the greengrocers)?
2. There is a measurement device in many inexpensive drip coffee makers. What does it measure?
3. In the USA, the nation's most accurate timekeeping is done by the Navy. Why was this the case?
4. This small ruler is triangular and, instead of being divided into half, quarter and eighth-inches, it's divided into 10ths, 20ths, 30ths and so on up to 60ths of an inch. What is this ruler intended for?
5. On the dashboard of your car are many measurement devices. Which one keeps you from getting a traffic ticket?
6. In 2003 during the SARS epidemic, photos appeared in the news showing people in masks aiming devices that looked like ray guns at the heads of other people. What were those devices?
7. In many old houses the thermostat contained a small amount of liquid mercury. Why was the mercury in the thermostat?
8. The air in your auto tires needs to be maintained at the correct pressure. In the USA, this is usually measured in PSI. Which of these is also a unit of pressure measurement?
9. A refractometer measures how much light bends when passing through a boundary between two substances of differing densities. Which of the following is a refractometer commonly used to measure?
10. A piezoelectric lighter has a quartz crystal in it which generates an electric spark when compressed. This is used to ignite the fuel in the lighter. When the process is reversed by applying a voltage to a quartz crystal, what can it measure?
Source: Author
tamrof
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gtho4 before going online.
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