Describe one process by which thunderstorms become electrified.?
What will be the ideal response?
ANSWER: ?One theory proposes that clouds become electrified as graupel and hail fall through a region of supercooled droplets and ice crystals. As liquid droplets collide with a hailstone, they freeze on contact and release latent heat. This process keeps the surface of the hailstone warmer than that of the surrounding ice crystals. When the warmer hailstone comes in contact with a colder ice crystal, an important phenomenon occurs: There is a net transfer of positive ions from the warmer object to the colder object. Hence, the hailstone becomes negatively charged and the ice crystal positively charged, as the positive ions are incorporated into the ice.
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The African country with the largest population is
A. Cote d'Ivoire B. Nigeria C. Ghana D. Cameroon
Why is the dump-and-cover approach used in sanitary landfills called the "cell" method?
a. because, if it is misused, you will be thrown in jail b. because it handles chemical reactions in the fill at the cellular level c. because it isolates waste in cell-like compartments d. because the pattern of dumping is circular e. because of the way the waste is attenuated
Some sailors, even in ancient times, would dump oil into the sea during stormy weather, claiming it reduced the winds around the ship. Could this practice work? Why or why not?
Instructions: Choose one answer from each pair of selections. A tangent arc may sometimes be seen above a HALO | SUN PILLAR