The Earth rotates
The Sun appears to travel through the sky during the day. In fact, the Sun does not move. The Earth moves around the Sun.
The Earth rotates on its axis. This movement is called rotation. One rotation takes 24 hours. This is a day.
The rotation of the Earth causes day and night. As the Earth rotates, it is day in the half that receives light from the Sun. It is night in the half that does not receive light.
The Earth orbits the Sun
The Earth orbits the Sun. One complete orbit takes 365 days. This is called an Earth revolution or a year. Earth revolution causes the four seasons.
The Earth rotates on a tilted axis. In winter, the Sun's rays reach the Earth at an angle. This gives less heat. In summer, the rays reach the Earth more directly. This gives more heat.
The Earth rotates on its axis. This movement is called rotation. One rotation takes 24 hours. This is a day.
The rotation of the Earth causes day and night. As the Earth rotates, it is day in the half that receives light from the Sun. It is night in the half that does not receive light.
The Earth orbits the Sun
The Earth orbits the Sun. One complete orbit takes 365 days. This is called an Earth revolution or a year. Earth revolution causes the four seasons.
The Earth rotates on a tilted axis. In winter, the Sun's rays reach the Earth at an angle. This gives less heat. In summer, the rays reach the Earth more directly. This gives more heat.
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