Below are pictures explaining the reasons behind why we have four different seasons. The Earth stays at the same angled axis as it revolves around the sun. This is why at two points we experience equinox (autumn and spring) and have twelve hours of night and twelve hours of daylight. When we experience summertime in Pennsylvania, the upper hemisphere of the Earth is tilted towards the sun. The lower hemisphere is tilted away so they'll be experiencing winter. When the earth gets to the other side of the sun, we will be in winter and the southern hemisphere will be having summer.
As another bit of information, since I have the phases of the moon also pictured below, when the Earth rotates on it's axis it gives us the day and night sky. As the moon orbits with the Earth around the sun, we see the different phases. That's a lot of moving!
No comments:
Post a Comment