【題目】 2019年1月3日10時(shí)26分,我國嫦娥四號探測器自主著陸,實(shí)現(xiàn)人類探測器首次月背軟著陸。我們探索認(rèn)知宇宙的腳步一直未停。

據(jù)此回答下列各題

1下列不是指南北半球分界線的是( )

A. 0 °緯線B. 赤道C. 本初子午線D. 最長的緯線

2地球上有陽光直射的溫度帶是( )

A. 熱帶B. 北溫帶C. 南溫帶D. 寒帶

3我國中小學(xué)放寒假時(shí),南半球的澳大利亞處在( )

A. 春季B. 夏季C. 秋季D. 冬季

4下列現(xiàn)象中是由地球自轉(zhuǎn)產(chǎn)生的是( )

A. 極夜現(xiàn)象B. 五帶的劃分C. 晝夜交替D. 四季變化

5地球儀上的緯線( )

A. 都是半圓B. 有無數(shù)條C. 長度相等D. 指示南北方向

【答案】

1C

2A

3B

4C

5B

【解析】

根據(jù)由于地球繞著太陽公轉(zhuǎn),產(chǎn)生了春、夏、秋、冬四季的變化,而且南北半球季節(jié)相反;地球繞地軸不停轉(zhuǎn)動(dòng),叫地球自轉(zhuǎn)。地球自轉(zhuǎn)的方向是自西向東,自轉(zhuǎn)的周期是一天。地球自轉(zhuǎn)產(chǎn)生的現(xiàn)象是晝夜交替和時(shí)間差異;地球在自轉(zhuǎn)的同時(shí)還要繞著太陽轉(zhuǎn)動(dòng)叫地球公轉(zhuǎn),地球公轉(zhuǎn)的方向是自西向東,公轉(zhuǎn)的周期是一年。地球圍繞太陽公轉(zhuǎn)產(chǎn)生了四季變化、正午太陽高度的變化、晝夜長短的變化以及地球五帶等現(xiàn)象,進(jìn)行分析解答。

1南北半球的劃分是以0°緯線即赤道為界,赤道以北為北半球,以南為南半球。赤道是最長的緯線。本初子午線為0°經(jīng)線。故選:C。

2五帶中,熱帶有陽光直射現(xiàn)象,寒帶有極晝極夜現(xiàn)象,溫帶既無陽光直射也無極晝極夜現(xiàn)象,四季變化明顯。依據(jù)題意。故選:A

3地球的公轉(zhuǎn)產(chǎn)生了四季變化,且南北半球季節(jié)正好相反,當(dāng)位于北半球的我國放寒假時(shí),南半球就是放暑假,澳大利亞在南半球,為夏季。根據(jù)題意。故選:B。

4地球自轉(zhuǎn)產(chǎn)生的現(xiàn)象是晝夜交替和時(shí)間差異;地球圍繞太陽公轉(zhuǎn)產(chǎn)生了四季變化、極晝極夜現(xiàn)象、晝夜長短的變化以及地球五帶劃分等現(xiàn)象。根據(jù)題意。故選:C

5地球儀上的緯線,除了南北極點(diǎn)以外,都是圓圈;緯線指示東西方向;緯線圈的大小不等,赤道為最大的緯線圈,從赤道向兩極緯線圈逐漸縮小,到南、北兩極縮小為點(diǎn)。在地球儀上,緯線有無數(shù)條。故選:B。

考查地球自轉(zhuǎn)公轉(zhuǎn)的特點(diǎn),經(jīng)緯線的特點(diǎn),五帶的劃分等。

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