Question #67d79

1 Answer
Oct 18, 2017

It depends on whether the Earth's axis is tilted toward the Sun or away from it.

Explanation:

The axis of rotation of the Earth remains at a fixed orientation as the Earth makes its annual orbit around the Sun. This means that during some parts of the year, the axis in the northern hemisphere will tilt toward the Sun. (This of course is summer.)

But as a consequence of having the axis tilted toward the Sun, the rotation of the Earth causes us to be able to see the Sun (at "sunrise") at an earlier time, and also allows us to still see the Sun at a later time in the evening. The effect is more pronounced the further north you live. (Above the Arctic Circle, the Sun is visible throughout the 24 hours of the day.)

The image hopefully gives you some idea (although it was meant to explain the seasons).

If I live far enough to the north in June, I can see the Sun all day long, but in December, I don't see it at all!

c.tadst.com/gfx/750x500/seasons.png?1