Questions
国际科学 1A MS-ESS1-2：太阳系和银河系中的引力和运动 - 测验 2
Single choice
在星系模型中，距离中心较远的恒星仍然是系统的一部分。哪个陈述最能体现其中的原因？
Options
A.星系质量的综合引力使遥远的恒星与该系统紧密相连。
B.边缘的恒星根本感受不到任何力量。
C.外层恒星粘在星系的边缘。
D.轻微的压力将恒星向内推，使它们保持连接。
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Step-by-Step Analysis
在星系模型中，星系中的恒星并非因为某个“边界处的力”把它们黏在一起，而是因为星系的总体重力场把它们绑定在一起，因此距离中心较远的恒星仍然属于同一系统。
选项1：'星系质量的综合引力使遥远的恒星与该系统紧密相连。' ......Login to view full explanationLog in for full answers
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