Which term refers to the changes in the Moon's appearance during the lunar cycle?

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Multiple Choice

Which term refers to the changes in the Moon's appearance during the lunar cycle?

Explanation:
The Moon’s appearance changes as it orbits Earth, showing different amounts of the Sun’s light on its near side. This sequence is called the phases of the Moon. Over a cycle that lasts about 29.5 days, you can observe new moon, crescent, first quarter, gibbous, full moon, and the waning stages back to new moon. This pattern comes from the geometry of the Sun–Earth–Moon system, not from the Moon changing its own brightness. Other terms don’t describe a repeating change in appearance: solstices are seasonal markers related to tilt, a solar eclipse is a specific event when the Sun is blocked, and geocentric theory is an old model about the universe’s structure.

The Moon’s appearance changes as it orbits Earth, showing different amounts of the Sun’s light on its near side. This sequence is called the phases of the Moon. Over a cycle that lasts about 29.5 days, you can observe new moon, crescent, first quarter, gibbous, full moon, and the waning stages back to new moon. This pattern comes from the geometry of the Sun–Earth–Moon system, not from the Moon changing its own brightness. Other terms don’t describe a repeating change in appearance: solstices are seasonal markers related to tilt, a solar eclipse is a specific event when the Sun is blocked, and geocentric theory is an old model about the universe’s structure.

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