昨天听写2篇 很差劲......
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气象学
' v: k, \' m r- NFirst of all, let look at why temperature tend to be higher in city than in the rural area. This happens because almost 15(50) percent of urban area are comprised of hard surfaces, like paved street, parking lot buildings and roof tops. As the result, any amount of rainfall is quickly repair(repelled) bodies(by this service) and carried away by stone(storm) drians((drains) and gutters. Especially water just does not have chance to stand out(around) until the evaporate And during the process of evaporation that heat is removed from the air. So, cities where there is less evaporation temperatures will be higher. Another cause is also the issues of add heat coming form building heating system, from industry, cars, and even human bodies. Even being in the city itself, tempearture(temperature) is vary significantly, for example, in winter, streets that get a lot of the use will be 2 or 3 degrees warmer than less travel streets. And place where cars fit(sits) for a while like a stoplight can be in another 3 degrees warmer. On the other hand, low sparw(spots) in city where cold air collect will be much colder than higher places. Rain and snowfall also affected by urbanization, city can(tend) to get quite less snowfall than the surrounding countryside. Because of the high temperature of the city but rainfall in the city can be 5 or 10 percent higher. This happens of two factors, first the warmer temperature of city, the second, the larger number of dust particles in urbal area. These dust particles are important requirement for common(condensation) The
' b8 t5 |$ U) v, j, {water vapore(vapore) in atmosphere is able change to liquid by planning to dust particles susbend(suspended) in the air. So, where there is the higher number of dust particles, condensation take place more easily. That is why fogs and clouds are usually more frequent around city. One condensation take place rainfall is not fall(far) behind. In the London area for example, thounderstorm(thunderstorm) can produce 30 percent more rainfall than the surrounding countryside. Some urban climatologists go so far as they argue can see a pattern increasing the rainfall during the workweek. They believe rainfall amounts are smaller at weekends because dust particles generated by cars and factories are reduced.) F$ T' F+ F! j- q: R2 h
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地质学
, @) H! l Q7 n7 k7 SI often hear my friends say days pass much more quickly than used to do, but geologist(geologically) speaking just the opposite is true. In fact, a complete day, which now lasts 24 hours actually used to be much shorter only 18, How do we know that Because of the number of finally strike(strata) rocks like this, rocks fall(from) belong ancient shortline, always the billion years ago. The tiny line for these sample show us the layers of light and dark form by dust blown over short(shoreline) from the line(land)side. Alternating was the modern(mud and )sand positive(deposited) by the waves. So, the space between one dark strata and the next emphases of the time between on month high tide and the next. And very in physical(fitness) of layers show us the cycle(circle) of the seasons as well. Together the dates indicate that there fewer months for year way back then. That means the moon was moving more slowly than as they remove(revolved) around the earth. So, what caused moon do speed up so much over last billion years. It must being the tips(tides), think about it. As the gravity of the moon pull on the oceans form the tides, all that water is also pulling on the moon. And with each rotation makes moon move a tiny bit faster. At the same time, like breaks(brakes) on the wheel of bicycle, the drag caused by the moon’s gravity makes the earth turn just a tiny bit slow. And so, after a billion years, one rotation meaning one day takes a lot longer than it once did.
