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    【题目】发射地球同步卫星与地球自转线速度密切相关。根据所学知识，回答下列各题。

    【1】下列发射场中最有利于卫星发射的是(　　)

    A. 拜科努尔(46°N) B. 肯尼迪(28°N)

    C. 酒泉(40°N) D. 库鲁(5°N)

    【2】地球同步卫星的绕地公转速度与地面对应点的地球自转速度比较，它们的(　　)

    A. 角速度和线速度都相同 B. 角速度和线速度都不同

    C. 角速度相同，线速度不同 D. 角速度不同，线速度相同

    【答案】

    【1】D

    【2】C

    【解析】试题分析：

    【1】地球的自转方向为自西向东，地球同步卫星为借助地球自转的线速度，一般向东发射，发射点地球自转线速度越大越有利于地球同步卫星的发射，库鲁纬度最低，其地球自转线速度最大，最有利于卫星发射。

    【2】地球同步卫星在地球某点上空飞行，在飞行过程中相对于地球表面某点静止，角速度相同；物体运动线速度与转动半径成正比，地球同步卫星绕地球运行的半径大于地球半径，线速度较地面对应点要大。

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