推荐回答(4个)

1. c
解析:我们先来计算每两条等高线的高度差
我们数一下,那条950的等高线和那条750的等高线相差了4个单位的等高距。可计算出以单位等高距为50米,我们看到④地与750相差了单位的等高距,可算出④旁边两条等高线一条是650,一条是600米。
从图上看到,有两条等高线都是950米,也就是说,本来外圈的950米继续攀升会增加到1000米,然而却没有,说明是山顶的地势塌陷,是典型的火山天池。
那我们怎么计算湖泊的海拔呢,就是在950上继续减少一个单位的等高距,那就是湖泊的海拔范围在900-950。
将湖泊的海拔范围减去④地的海拔范围就得出了两者的相对高度H
当然计算相对高度,也要找到其最大值和最小值,最大值就是我们预定的两者之间的最小高差
即900-650=250
最大高差即950-600=350
这里我们求出的是大概的值
再来比较题目的答案,只要是这个范围就可以了
所以湖泊水面和④点的相对高度H可能是C
2.①
解析:只有①和②位于迎风坡,且气流随山地爬升到一定高度,遇冷才会形成降水,所以是最符合条件的①
解析:从图中可判断出等高距为50m。其等高线地形图描绘的地区为火山口湖,湖面高度范围
在900<湖<950,而4点的高度范围为600<④<650,所以两地的高差为 250<高差<350,所以选择C
该区域是冬季存水、夏季干涸,与地中海气候冬雨夏热性质接近,通过纬度变化可判断其位于南半球30°--40°的范围内,与地中海气候分布较接近。又因南半球地中海气候冬季在西风带控制,南半球西风带吹西北风,故1地位于西北风的迎风坡一次,降水较多,故选择1地
答案:C ①
解析:
第一题求相对高程,是一道常见的等值线问题。方法有二:一、交叉相减法;二、公式法。从图中可判断出等高距为50m。湖面高度范围在900<湖<950,而4点的高度范围为600<④<650,交叉相减,得出两地的高差为 250<高差<350。运用公式法时,关键是找出湖面高程和④地高程之间相差几条等高线。因为湖面高度范围在900<湖<950,而4点的高度范围为600<④<650,所以二者相差六条等高线,利用公式:(6-1)50<高差<(6+1)50,求得250<高差<350。故选择C
第二题判断降水分布,属气候判断中的基本内容。题中有两个关键信息。一是该湖泊冬季存水、夏季干涸;二是该地纬度在南半球30°--40°之间。分析信息,可得出该地属地中海气候。南半球地中海气候冬季在西风带控制,刮西北风,故1地位于西北风的迎风坡,降水较多,故选择1地
答案:C ①
注意知识归因。希望对你有帮助。
等高线为五十米,所以4地是600-650米。又因为2位于湖泊,因为海陆引发降水,所以最大。
选b和2
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