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精英家教網 > 初中地理 > 題目詳情

【題目】學習地球自轉時，同學們開展了一系列活動。讀圖，回答下面小題。

【1】用燈泡模擬太陽，用地球儀觀察晝夜現象，需要選擇的是

A. B. C. D.

【2】演示地球自轉，正確的做法是

A. 面向地球儀，自左向右撥動地球儀

B. 將地球儀垂直放在桌面上

C. 地軸的指向有規律的發生變化

D. 移動地球儀沿橢圓軌道做水平運動

【3】演示結束后，同學們分別繪制了地球自轉示意圖(如圖)，其中最合理的是

A. B. C. D.

【答案】

【1】D

【2】A

【3】B

【解析】人們根據地球的大小，按一定的比例縮小成一個模型就成了地球儀，地球自轉的方向是自西向東，太陽直射點會在南北回歸線之間來回移動。

【1】用燈泡模擬太陽，用地球儀觀察晝夜現象，需要選擇的是不透明球體，才能體現晝夜現象，故選D。

【2】演示地球自轉，面向地球儀，自左向右撥動地球儀；將地球儀斜放在桌面上；地軸的指向保持不變；地球儀保持不動，故選A。

【3】地球在自轉時，面向太陽這一面是晝半球，背向太陽這一面是夜半球，晝半球與夜半球的分界線與太陽光垂直，故選B。

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