The Earth and Moon


We are studying the Earth in the Solar System. We will explore the concept that most objects in the solar system are in a regular and predictable motion.

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Image credit: Earthshine Project, BBSO.
Image credit: Earthshine Project, BBSO.


The positions of the Earth and moon relative to the sun explain the cycles of day and night, and the monthly moon phases.

1. Explain the motion of the Earth relative to the sun that causes Earth to experience cycles of day and night.
2. Differentiate between Revolution and Rotation. Construct models demonstrating Earth's rotation on its axis, the moon's revolution around the Earth, and the Earth and moon revolving around the sun.
3. Distinguish between the sun as a source of light and the moon as a reflection of that light.
4. Observe and record the moon's appearance, or phases, over time and analyze findings to describe the cyclical changes in its appearance from Earth.

Facts about the Earth and its moon:
-The Earth is the third planet from the sun and the only known planet to have life.
-The moon is the Earth's only natural satellite.
-The Earth is about 4 times the size of the moon.
-The moon is believed to have formed when a giant meteor hit the Earth. Matter from the Earth was flung into space, and then reformed to create the moon.
-The moon revolves around the Earth.