Unit 8.4 Quiz 7

The Moon phase during a lunar eclipse is:

• waxing crescent

• waxing gibbous

• new Moon

• full Moon

Answer explanation

A lunar eclipse occurs when the Earth is directly between the Sun and the Moon, which can only happen during a full Moon. Therefore, the correct answer is full Moon.

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During a lunar eclipse, what color does the Moon appear?

• red-orange

• yellow-green

• black

• white

Answer explanation

During a lunar eclipse, the Earth's shadow causes the Moon to scatter sunlight, resulting in a red-orange hue. This phenomenon is often referred to as a 'Blood Moon', making 'red-orange' the correct answer.

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This image shows a:

• waxing gibbous.

• waning crescent.

• solar eclipse.

• lunar eclipse.

Answer explanation

A lunar eclipse occurs when the Earth is between the sun and the moon, causing the Earth's shadow to fall on the moon. This is distinct from the other options, which do not involve the Earth's shadow.

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 Which image shows a lunar eclipse?

• A

• B

• D

• C

Answer explanation

Image A shows a lunar eclipse, characterized by the Earth's shadow covering the Moon. The other images do not depict this phenomenon.

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The diagram below shows Earth's orbit around the Sun and different positions of the Moon as it travels around Earth. Letters A through D represent four different positions of the Moon. At which position is an eclipse of the Moon most likely to occur?

• A

• B

• C

• D

Answer explanation

An eclipse of the Moon occurs when the Earth is directly between the Sun and the Moon. Position B shows the Moon in line with the Earth and Sun, making it the most likely position for a lunar eclipse.

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The diagram represents the Moon at four positions, labeled A, B, C, and D, in its orbit around the Earth. The position of the full-Moon phase is labeled. Solar and lunar eclipses rarely happen during a cycle of phases because the:

• Moon's orbit is circular and Earth's orbit is elliptical.

• plane of the Moon's orbit is different from the plane of Earth's orbit.

• plane of the Moon's orbit is the same as the plane of Earth's orbit.

• Moon's orbit is elliptical and Earth's orbit is elliptical.

Answer explanation

Solar and lunar eclipses are rare because the plane of the Moon's orbit is different from the plane of Earth's orbit. This misalignment prevents the Sun, Earth, and Moon from being perfectly aligned during most phases.

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The diagram shows the relative positions of the Sun, the Moon, and Earth when an eclipse was observed from Earth. Positions A and B are locations on Earth's surface. Which statement correctly describes the type of eclipse that was occurring and the position on Earth where this eclipse was observed?

• A lunar eclipse was observed from position A.

• A lunar eclipse was observed from position B.

• A solar eclipse was observed from position A.

• A solar eclipse was observed from position B.

Answer explanation

A solar eclipse occurs when the Moon is between the Sun and Earth, casting a shadow on Earth. Since the question states the eclipse was observed from position A, it indicates that a solar eclipse was occurring there.

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What is represented by the diagram?

• changing phases of the Sun

• changing phases of the Moon

• stages in an eclipse of the Sun

• stages in an eclipse of the Moon

Answer explanation

The diagram illustrates the stages in an eclipse of the Sun, showing how the Moon passes between the Earth and the Sun, blocking the Sun's light. This is distinct from the phases of the Moon or an eclipse of the Moon.

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