On the celestial sphere, halfway between the celestial poles lies the

Question

BlackTom AI · Accepted Answer

The question asks about a feature on the celestial sphere that lies halfway between the celestial poles.
Option 1: ecliptic. The ecliptic is the apparent path of the Sun across the sky over the year, lying close to the zodiac. It is not defined as halfway between the poles, so this choice is incorrect.
Option 2: horizon. The horizon is the circle where the sky seems to meet the Earth from a given observation point; it depends on the observer's location and has no fixed relation to the celestial poles. This makes it an unsuitable answer.
Option 3: celestial equator. The celestial equator is the projection of Earth's equator onto the celestial sphere, and by construction it lies exactly midway between the celestial poles. This is exactly the description given in the question, so this option is correct.
Option 4: zenith. The zenith is the point directly overhead from the observer's position. It does not relate to the polar positions or to a midway location between the poles, so this is not correct.
Option 5: meridian. The meridian is a great circle passing north–south through the observer's zenith and nadir; it is a directional reference on the sky but not the halfway line between the poles. Therefore this choice is incorrect.

SP25-BL-AST-A100-35413 Chapter 2 Quiz

On the celestial sphere, halfway between the celestial poles lies the

查看解析

登录即可查看完整答案

类似问题

If you're standing on the North Pole of the Earth, where in the sky would the celestial equator be?

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

Under the assumptions used in cost-volume-profit analysis, as the activity increases:

The CVP and break-even analysis are supported by a range of important assumptions. Which of the following is not an assumption of the CVP:

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单