【題目】讀地球的半徑和赤道周長(zhǎng)圖,回答下列問(wèn)題.
(1)圖中A所代表的地理事物的名稱(chēng)是 半徑,B代表的地理事物的名稱(chēng)是 半徑;A (大于、小于)B,因此,地球是一個(gè) 的球體.
(2)C所代表的地理事物的名稱(chēng)是 ,長(zhǎng)約 千米.
(3)地球的平均半徑長(zhǎng)約 千米,地球表面積約 平方千米
【答案】
(1)極;赤道;小于;兩極稍扁、赤道略鼓
(2)赤道;4萬(wàn)
(3)6371;5.1億
【解析】(1)圖中A所代表的地理事物的名稱(chēng)是極半徑,B代表的地理事物的名稱(chēng)是赤道半徑;極半徑長(zhǎng)度小于赤道半徑長(zhǎng)度,因此,地球是一個(gè)兩極稍扁、赤道略鼓的球體.(2)C所代表的地理事物的名稱(chēng)是赤道,長(zhǎng)約4萬(wàn)千米,赤道是最長(zhǎng)的緯線.(3)地球的平均半徑長(zhǎng)約6371千米,地球表面積約5.1億平方千米.所以答案是:(1)極;赤道;小于;兩極稍扁、赤道略鼓;(2)赤道;4萬(wàn);(3)6371;5.1億.
年級(jí) | 高中課程 | 年級(jí) | 初中課程 |
高一 | 高一免費(fèi)課程推薦! | 初一 | 初一免費(fèi)課程推薦! |
高二 | 高二免費(fèi)課程推薦! | 初二 | 初二免費(fèi)課程推薦! |
高三 | 高三免費(fèi)課程推薦! | 初三 | 初三免費(fèi)課程推薦! |
科目:初中地理 來(lái)源: 題型:
【題目】下列四幅地圖,圖幅大小相同,則比例尺最小的是( )。
A. 中國(guó)地圖 B. 亞洲地圖 C. 山東地圖 D. 濟(jì)南地圖
查看答案和解析>>
科目:初中地理 來(lái)源: 題型:
【題目】
Haze (霧霾) has become a common word in recent years. It is a kind of air pollution caused by human beings. More and more cars are on the road, and more and more factories are built everywhere, so the pollutant is gave off that do harm to people's life and health, Besides, haze will make the traffic heavier and accidents easy to happen, because drivers can't see the road clearly in the haze.Thirdly, if someone inhales (吸入) much haze, he has greater possibility to get cancer.
In order to protect ourselves and environment, we should take action at once instead of waiting for help. There are some tips for you:
Wear a mask(口罩): this is an efficient way to prevent you from inhaling the haze. But pay attention to buy the masks that arestandard (合格的) and as suitable as the size of your face. And after using, fold the masks, put away when they are dry, and don't wash them.
Don't go outside as possible as you can: in the haze, you should reduce (減少) the time on which you spend doing morning exercise. For workers, don't ride to offices but take a bus. And when going inside, you should drink much water.
The way to clean is very' simple: use the warm water to wash your face, mouth and nasal cavity(鼻腔). This can help you to wash ont the pollutant.
Don't keep windows open for a long time: if the haze is more and more serious, don't open the windows. If you want to, please avoid the peak(最高峰) of haze.
All people want to live in a healthy way, so do everything that we can do in our best.
【1】________
【2】________
【3】________
【4】________
【5】________
【6】________
【7】________
【8】________
【9】________
【10】________
查看答案和解析>>
科目:初中地理 來(lái)源: 題型:
【題目】東、西半球的分界線是( )
A.0°經(jīng)線、180°經(jīng)線 B.20°E、160°W
C.20°W、160°W D.20°W、160°E
查看答案和解析>>
科目:初中地理 來(lái)源: 題型:
【題目】讀“陸半球地圖”,回答問(wèn)題。
(1)A大洲居民以________人種為主。
(2)從發(fā)展水平看,B大洲大多為_(kāi)___________國(guó)家。
(3)七大洲中,“陸半球地圖”沒(méi)有顯示的大洲有大洋洲和_________。
(4)簡(jiǎn)述C大洲地勢(shì)與河流的關(guān)系_________。
(5)在某次軍事演練活動(dòng)中,彼得船長(zhǎng)駕船從D點(diǎn)依次向正北、正東、正南、正西各行駛了500千米后,發(fā)現(xiàn)只能回到D點(diǎn)的正東面。請(qǐng)用地理知識(shí)向彼得船長(zhǎng)解釋不能回到D點(diǎn)的原因:______。
查看答案和解析>>
百度致信 - 練習(xí)冊(cè)列表 - 試題列表
湖北省互聯(lián)網(wǎng)違法和不良信息舉報(bào)平臺(tái) | 網(wǎng)上有害信息舉報(bào)專(zhuān)區(qū) | 電信詐騙舉報(bào)專(zhuān)區(qū) | 涉歷史虛無(wú)主義有害信息舉報(bào)專(zhuān)區(qū) | 涉企侵權(quán)舉報(bào)專(zhuān)區(qū)
違法和不良信息舉報(bào)電話:027-86699610 舉報(bào)郵箱:58377363@163.com