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Question: The Fujita scale is used to measure which natural phenomenon?
Correct Answer The Fujita scale was developed by T. Theodore Fujita, a University of Chicago professor, in 1971. There are 6 levels of the F-scale, ranging from F0 (wind speeds of less than 73 mph) to F5 (wind speeds ranging from 261-318 mph). At level F5 cars may be tossed about, houses torn down and trees uprooted...get into the cellar!
Question: The Mercalli scale is a lesser known measure of what important natural phenomenon?
Correct Answer Now called the 'Modified Mercalli Scale', it was invented by Giuseppe Mercalli in 1902 to describe the intensity of earthquakes, and is not a very scientific scale like its counterpart, the Richter scale, being qualitative rather than quantitative. An example here...this is the 'measure' of MM VIII on the Mercalli scale: 'Everyone runs outdoors. Moderate to major damage. Minor damage to specially designed buildings. Chimneys and walls collapse.' I think he should have added 'run for your lives' for level 12!
Question: Which of the following measurements is not a unit of distance?
Correct Answer An ammeter is a device that measures the current in an electric circuit, the amount of charge per unit time through a point of reference. Meter simply comes from the Greek word "metron" meaning "to measure". Parsecs are units used to measure distances in space. In the Bible, Noah built his Ark based on cubits. Apparently it was big enough, as he did survive the deluge. Finally, to measure the radius of an atom, or the distance between atoms, we often use Angstroms. Distance measurements have many odd and assorted units. Rare units like famns, archins, kens, barleycorns, chains, and others can be found. Other units like light-years, caliber, leagues, spans, you may have heard of, but never known exactly how far they measure. The US uses the imperial measurement system, which uses feet, inches and miles. The metric system, is more common in the rest of the world. The animal society is against the switch to the metric system; if inches were abolished, we'd have to rename the inchworm the two-and-a-half-centimeter worm, quite a mouthful.
Question: Driving right along, what is the instrument used to measure distance in a car called?
Correct Answer The odometer measures the distance the car has driven by measuring the magnetic field the rear transmission creates while spinning. In layman's terms, the faster the car goes, the more distance you travel and the stronger the magnetic field. Therefore, the odometer will spin faster indicating that your car has gone a farther distance. This will ultimately decrease the value of the car. Economics, it's a science stronger than Physics.