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If we stood in the same spot outside for an entire day, it would look like the Sun was moving across the sky. It is really the Earth that is moving! As your spot on the Earth rotates toward the Sun, we see a sunrise, and as it rotates away, you see a sunset. The Sun appears to be directly above us in the sky at noon.

Three different pictures of Rosy standing on the earth (Rosy's size is inproportionally large compared to the earth).  In the first part, her body is pointed NW of the earth, and it is labeled 'Sunrise.'  In the second picture, Rosy's body is pointed north of the earth, and the picture is labeled 'Noon.'  In the final picture, Rosy's body is pointed NE of the earth, and it is labeled 'Sunset.'

In the picture above, Rosy sees the Sun rise in the east because the Earth is rotating. She sees the Sun directly above her at noon, and then she sees the Sun set in the west - all because of the Earth's rotation.

So, we know that the Earth's rotation causes day and night. The Earth's revolution around the Sun also causes our seasons. The different seasons on Earth are caused by the tilt of the Earth's axis and the angle of the sunlight when it hits the Earth.

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If the Moon Were a Penny

Learn how the Moon moves around the Earth!

MS Word Version - PDF Verson


The Earth is not positioned straight up and down - it is tilted at an angle. So, for example, when the Earth is tipped towards the Sun, the northern hemisphere has summer. Summer in the northern hemisphere brings longer days (over 12 hours of sunlight a day!) and shorter nights. The sunlight during the summer is also hitting the Earth head on, which heats that part of the Earth. At the same time of the year, the southern hemisphere is having winter, which means less hours of daylight. The sunlight is not striking the southern hemisphere head on at that time, which causes less heating of the Earth in the southern hemisphere.

A picture of the earth orbitting the sun.  The earth is stopped in four places with the following captions:
					  Spring in the Northern Hemisphere: Autumn in the Southern Hemisphere
					  Winter in the Northern Hemisphere: Summer in the Souther Hemisphere
					  Autumn in the Northern Hemisphere: Spring in the Southern Hemisphere
					  Summer in the Northern Hemisphere: Winter in the Southern Hemisphere

Agronaut Log LogoEntry 6: Can you find an example of a country that is having winter when you are having summer? Record the country in your log. Write a paragraph about 1) what you do in the summer and 2) what a boy or girl your age in that country might be doing at that same time, when they are having winter.



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