Which of the following factors usually brings on atmospheric stagnation?
A. thunderstorms
B. slow-moving anticyclones
C. tall buildings in a city
D. overcast skies
Answer: B
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What are the three most far-reaching effects of underground mining? What will be an ideal response?
Which of the following does NOT determine whether a rock is an ore?
A. the grade of the ore B. the type of ore, such as oxide versus sulfide types C. the location of the deposit D. size and depth of the mineral deposit E. all of these factors determine whether a rock is an ore
From the 1930s to the 1950s, an X-ray machine called a shoe-fitting fluoroscope was common in shoe stores
People would try on shoes, stand with their feet in the machine, and allow the salesperson to view live images of the bones of their feet in the shoes! Sometimes the salesperson would reach down and adjust the person's shoes for a better image. These machines used X-rays and exposed the feet of customers to 5 to 30 seconds of radiation. Further, lower doses of radiation exposure also occurred within about 10 to 15 inches of the outside of the machine. If you were looking for medical problems resulting from the use of these fluoroscopes in shoe stores, where would you expect the greatest harm? A) customers who had their feet exposed to the X-ray device B) the salespeople who operated the machine to sell shoes C) salespeople who worked in nearby stores D) the salesperson who worked behind the cash register in the store
During the Industrial Revolution, the speed with which people, goods, and information crossed the globe accelerated greatly when animate energy was applied to transportation
Indicate whether the statement is true or false