教师技能大赛地理

1、Please treat your eyes with elegance in everything we do2014年10月16日Naier shid ashu aige正午太正午太阳阳高度角的高度角的计计算算与应与应用用Please treat your eyes with elegance in everything we do2014年4月5日Naier shid ashu aige 作为地球运动的结果，正午太阳高度作为地球运动的结果，正午太阳高度角的变角的变化化深刻影响着人类的生产、生活深刻影响着人类的生产、生活。 太阳光线对于地平面的交角，叫做太太阳光线对于地平面的交角，叫做太阳

2、高度角，简称太阳高度（用阳高度角，简称太阳高度（用H H表示）。表示）。同一时刻正午太阳高度由直射点向南北两同一时刻正午太阳高度由直射点向南北两侧递减。因此，太阳直射点的位置决定着侧递减。因此，太阳直射点的位置决定着一个地方的正午太阳高度的大小。在太阳一个地方的正午太阳高度的大小。在太阳直射点上，太阳高度为直射点上，太阳高度为9090，在晨昏线，在晨昏线上，太阳高度是上，太阳高度是0 0。 正午太阳高度变化的原因：由于黄赤交角的存在，太阳直射点的南北 小结：太阳直射点所在纬度正午太阳高度为小结：太阳直射点所在纬度正午太阳高度为90，距离太阳直射点所在纬线越近，正午太阳高度角越大，越远则正午太阳

3、高度角越，距离太阳直射点所在纬线越近，正午太阳高度角越大，越远则正午太阳高度角越小小正午太阳高度变化的原因：由于黄赤交角的存在，太阳直射点的南北移动，引起正午太阳高度的变化。正午太阳高度变化的原因：由于黄赤交角的存在，太阳直射点的南北移动，引起正午太阳高度的变化。 正午太阳高度的变化规律：正午太阳高度就是一日内最大的太阳高度，它的大小随纬度不同和季节变正午太阳高度的变化规律：正午太阳高度就是一日内最大的太阳高度，它的大小随纬度不同和季节变化而有规律地变化。化而有规律地变化。 正午太阳高度的变化规律按节气：Naier shid ashu aigePlease treat your eyes wi

4、th elegance in everything we do2014年10月16日正午太阳高度的变化规律按纬度：某地正午太阳高度的大小，可以用下面的公式来计算：公式来计算：H90|。其中H为正午太阳高度数，为当地地理纬度，永远取正值，为直射点的纬度，当地夏半年取正值，冬半年取负值。 在实际的解题中，许多时候并不需要运用此公式。由于在某地点正午太阳高度与直射点太阳高度差值等于它们的纬度差，所以利用下面公式计算更为方便；某地正午太阳高度角H90，其中为某地与太阳直射点的纬度差。 Naier shid ashu aige88%And those who go by do not say, The

5、blessing of the Lord be on you; we give you blessing in the name of the Lord.重点详解（一）重点详解（一）正午太阳高度的应用：正午太阳高度的应用：（1）确定地方时）确定地方时 （2）判断所在地区的纬度）判断所在地区的纬度 （3）确定房屋的朝向）确定房屋的朝向 （4）判断日影长短及方向）判断日影长短及方向 （5）计算楼间距、楼高）计算楼间距、楼高 Naier shid ashu aige关关于于楼楼间间距距或或楼楼高高度度的的计计算算纬度较低的地区，楼距较小，纬度较高的地区楼距较大。以我国为例，见下图，南楼高度为h，该地

6、冬至日正午太阳高度为H，则最小楼间距LhcotH。Naier shid ashu aigend God gave them his blessing and said tothem, Be fertile and have increase, and make theearth full and be masters of it; be rulers over the fish of the sea and over the birds of the air and over every living thing moving on the earth. the birds of the ai

7、r and over every living thing moving on the earth. And to every beast of the earth and to every bird of the air and every living thing moving on the face of the earth I have given every green plant for food: and it was so. And God gave them his blessing and said to them, Be fertile and have increase

8、, and make the earth full and be masters of it; be rulers over the fish of the sea and over the birds of the air and over every living thing moving on the earth. the birds of the air and over every living thing moving on the earth. And to every beast of the earth and to every bird of the air and eve

9、ry living thing moving on the face of the earth I have given every green plant for food: and it was A A假设某地楼高21米，且该地的冬至日正午太阳高度角是30度，那么，两楼间的最小楼间距应为多少？Naier shid ashu aige关于太阳能的利用问题关于太阳能的利用问题为了更好地利用太阳能，应不断调整太阳能热水器与楼顶平面之间的倾角，使太阳光与受热板之间成直角。其倾角和正午太阳高度角的关系为h=90(如图所示)。字Naier shid ashu aigeAnd God gave them

10、 his blessing and said to them, Be fertile and have increase, and make the earth full and be masters of it; be rulers over the fish of the sea and over the birds of the air and over every living thing moving on the earth. And God gave them his blessing and said to them, Be fertile and have increase,

11、 and make the earth full and be masters of it; be rulers over the fish of the sea and over the birds of the air and over every living thing moving on the earth. And God gave them his blessing and said to them, Be fertile and have increase, and make the earth full and be masters of it; be rulers over

12、 the fish of the sea and over the birds of the air and over every living thing moving on the earth. T体AndalusAndalus宋体宋体Please treat your eyes with elegance in everything we do2014年4月5日Naier shid ashu aige思考Naier shid ashu aigeAnd God gave them his blessing and said to them, Be fertile and have incr

13、ease, and make the earth full and be masters of it; be rulers over the fish of the sea and over the birds of the air and over every living thing moving on the earth. And God gave them his blessing and said to them, Be fertile and have increase, and make the earth full and be masters of it; be rulers over the fish of the sea and over the birds of the air and over every living thing moving on the earth. And God gave them his blessing and said to them, Be fertile and have increase, and make the earth full and be masters of it; be ru