青岛版科学六年级上册 19、登上月球,1.对月球的认识(1)月球是个球体,是地球的卫星,距离地球约384000千米。(2)月球比地球小得多,49个月球才有一个地球大。(3)月球不会发光,我们所看到的月光是月球反射太阳的光。(4)月面高低不平,表面像铺上了一层细细的粉末。(5)月球上没有大气,没有风、雨,是一个寂静、干旱、黑暗的世界。(6)昼夜温差大,白天最高120,晚上可降到零下180以下。(7)月球引力小,只相当于地球的六分之一,人在上面轻飘飘的。(8)没有植物、动物,没有生命,127C,183C,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C,冰,冰,127C,183C