The earth spins on its axis
every 24 hours. As it spins, the parts of the earth that are
closest to the sun are in the daylight, the parts farthest away
in night. The earth orbits
around the sun on a path that is nearly circular. It takes 365-1/4
days, or one year, for the earth to complete this cycle. During
this time, we experience the four seasons.
The sun is a star. The
sun's core reaches temperatures
of 27 million degrees Fahrenheit.
Its bright light provides plants and animals warmth, light and
energy. The sun is the first stop on the energy cycle. Plants
use the sun's energy to grow. Animals feed on plants. People
eat plants and plant-eating animals for nourishment.
Everything is connected and all energy begins with the sun!
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