Unit 8- Earth, Sun, & Moon

What causes the different phases of the Moon as observed from Earth?

• The Earth's shadow falling on the Moon

• The Moon's rotation on its axis

• The relative positions of the Earth, Moon, and Sun

• The Moon's distance from the Earth

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Explain how the gravitational attraction between the Earth and the Sun affects the Earth's orbit.

• It causes the Earth to move in a straight line

• It keeps the Earth in a circular orbit

• It causes the Earth to orbit in an elliptical path

• It has no effect on the Earth's orbit

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Describe the process that leads to a solar eclipse.

• The Earth comes between the Sun and the Moon

• The Moon comes between the Sun and the Earth

• The Sun comes between the Earth and the Moon

• The Earth and Moon are on opposite sides of the Sun

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How do the positions of the Earth, Moon, and Sun affect the occurrence of tides on Earth?

• Tides are highest when the Earth is closest to the Sun

• Tides are highest when the Earth, Moon, and Sun are aligned

• Tides are highest when the Moon is at a right angle to the Earth and Sun

• Tides are not affected by the positions of the Earth, Moon, and Sun

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Predict the impact on Earth's seasons if the tilt of Earth's axis were to increase.

• Seasons would become more extreme

• Seasons would become less extreme

• There would be no change in seasons

• Seasons would disappear completely

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What is the primary reason for the occurrence of seasons on Earth?

• The distance of the Earth from the Sun

• The tilt of the Earth's axis

• The rotation of the Earth on its axis

• The gravitational pull of the Moon

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Analyze how the phases of the Moon would change if the Moon's orbit around Earth were faster.

• The phases would occur more frequently

• The phases would occur less frequently

• The phases would remain the same

• The phases would disappear

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Which of the following best explains why we only see one side of the Moon from Earth?

• The Moon does not rotate on its axis

• The Moon rotates on its axis at the same rate it orbits Earth

• The Earth's rotation is faster than the Moon's rotation

• The Sun's light only illuminates one side of the Moon

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What would happen to the tides on Earth if the Moon were to move farther away?

• Tides would become stronger

• Tides would become weaker

• Tides would remain the same

• Tides would disappear

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Evaluate the impact of a lunar eclipse on the visibility of the Moon from Earth.

• The Moon becomes completely invisible

• The Moon appears red or darkened

• The Moon appears brighter than usual

• The Moon's visibility is unaffected

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