How Eclipses Happen - Middle School Earth and Space Science
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Which type of solar eclipse occurs when an observer is in the Moon’s umbra?
Which type of solar eclipse occurs when an observer is in the Moon’s umbra?
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Total solar eclipse. Moon completely blocks Sun in umbra region.
Total solar eclipse. Moon completely blocks Sun in umbra region.
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Which type of solar eclipse occurs when an observer is in the Moon’s penumbra?
Which type of solar eclipse occurs when an observer is in the Moon’s penumbra?
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Partial solar eclipse. Only part of Sun is blocked in penumbra.
Partial solar eclipse. Only part of Sun is blocked in penumbra.
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Which type of solar eclipse occurs when an observer is in the Moon’s antumbra?
Which type of solar eclipse occurs when an observer is in the Moon’s antumbra?
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Annular solar eclipse. Moon appears smaller than Sun, leaving ring visible.
Annular solar eclipse. Moon appears smaller than Sun, leaving ring visible.
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Which type of lunar eclipse occurs when the Moon passes fully through Earth’s umbra?
Which type of lunar eclipse occurs when the Moon passes fully through Earth’s umbra?
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Total lunar eclipse. Moon completely enters Earth's darkest shadow.
Total lunar eclipse. Moon completely enters Earth's darkest shadow.
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Which type of lunar eclipse occurs when the Moon passes partly into Earth’s umbra?
Which type of lunar eclipse occurs when the Moon passes partly into Earth’s umbra?
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Partial lunar eclipse. Only part of Moon enters Earth's umbra.
Partial lunar eclipse. Only part of Moon enters Earth's umbra.
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Which type of lunar eclipse occurs when the Moon passes only through Earth’s penumbra?
Which type of lunar eclipse occurs when the Moon passes only through Earth’s penumbra?
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Penumbral lunar eclipse. Moon passes through Earth's faint outer shadow.
Penumbral lunar eclipse. Moon passes through Earth's faint outer shadow.
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Identify the shadow that falls on Earth during a solar eclipse: Earth’s or Moon’s?
Identify the shadow that falls on Earth during a solar eclipse: Earth’s or Moon’s?
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The Moon’s shadow falls on Earth. Moon casts shadow during solar eclipse.
The Moon’s shadow falls on Earth. Moon casts shadow during solar eclipse.
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What condition must occur at a node for an eclipse to happen?
What condition must occur at a node for an eclipse to happen?
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New or full Moon must occur near a node. Eclipses only occur when Moon crosses orbital plane.
New or full Moon must occur near a node. Eclipses only occur when Moon crosses orbital plane.
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What is a total lunar eclipse?
What is a total lunar eclipse?
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The Moon passes fully into Earth’s umbra. Earth's umbra completely covers the Moon.
The Moon passes fully into Earth’s umbra. Earth's umbra completely covers the Moon.
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What is an annular solar eclipse (key geometric cause in a model)?
What is an annular solar eclipse (key geometric cause in a model)?
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The Moon appears smaller, leaving a ring of Sun visible. Moon is too far to fully cover Sun's disk.
The Moon appears smaller, leaving a ring of Sun visible. Moon is too far to fully cover Sun's disk.
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Identify the correct eclipse type: Earth is between the Sun and the Moon.
Identify the correct eclipse type: Earth is between the Sun and the Moon.
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Lunar eclipse. Earth between Sun and Moon creates this shadow event.
Lunar eclipse. Earth between Sun and Moon creates this shadow event.
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Identify the correct eclipse type: The Moon is between the Sun and Earth.
Identify the correct eclipse type: The Moon is between the Sun and Earth.
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Solar eclipse. Moon between Sun and Earth blocks sunlight.
Solar eclipse. Moon between Sun and Earth blocks sunlight.
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What is the umbra in an eclipse shadow model?
What is the umbra in an eclipse shadow model?
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The darkest central shadow where light is fully blocked. Cone-shaped region where no direct sunlight reaches.
The darkest central shadow where light is fully blocked. Cone-shaped region where no direct sunlight reaches.
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What Moon phase is required for a lunar eclipse to occur?
What Moon phase is required for a lunar eclipse to occur?
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Full Moon. Moon is opposite the Sun, allowing Earth's shadow to reach it.
Full Moon. Moon is opposite the Sun, allowing Earth's shadow to reach it.
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What Moon phase is required for a solar eclipse to occur?
What Moon phase is required for a solar eclipse to occur?
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New Moon. Moon is between Sun and Earth, appearing dark from Earth.
New Moon. Moon is between Sun and Earth, appearing dark from Earth.
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What is a lunar eclipse (in terms of which shadow falls on which body)?
What is a lunar eclipse (in terms of which shadow falls on which body)?
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Earth’s shadow falls on the Moon. Earth blocks sunlight from reaching the Moon during alignment.
Earth’s shadow falls on the Moon. Earth blocks sunlight from reaching the Moon during alignment.
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What is a solar eclipse (in terms of which body blocks which body)?
What is a solar eclipse (in terms of which body blocks which body)?
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The Moon blocks the Sun as seen from Earth. The Moon passes between Sun and Earth, casting a shadow.
The Moon blocks the Sun as seen from Earth. The Moon passes between Sun and Earth, casting a shadow.
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What is the penumbra in an eclipse shadow model?
What is the penumbra in an eclipse shadow model?
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The lighter outer shadow where light is partially blocked. Partial shadow region where some sunlight still reaches.
The lighter outer shadow where light is partially blocked. Partial shadow region where some sunlight still reaches.
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Which Moon phase is required for a solar eclipse: new moon or full moon?
Which Moon phase is required for a solar eclipse: new moon or full moon?
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New moon. Moon is between Sun and Earth during new moon phase.
New moon. Moon is between Sun and Earth during new moon phase.
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What is an annular solar eclipse?
What is an annular solar eclipse?
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The Moon appears smaller, leaving a bright ring of Sun visible. Moon is too far to fully cover Sun's disk.
The Moon appears smaller, leaving a bright ring of Sun visible. Moon is too far to fully cover Sun's disk.
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In a model, what does it mean if an observer is in the penumbra during a solar eclipse?
In a model, what does it mean if an observer is in the penumbra during a solar eclipse?
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The observer sees a partial solar eclipse. Penumbra location means only partial Sun coverage.
The observer sees a partial solar eclipse. Penumbra location means only partial Sun coverage.
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What is a penumbral lunar eclipse?
What is a penumbral lunar eclipse?
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The Moon passes only through Earth’s penumbra. Subtle dimming occurs without entering umbra.
The Moon passes only through Earth’s penumbra. Subtle dimming occurs without entering umbra.
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Which object’s shadow falls on Earth during a solar eclipse?
Which object’s shadow falls on Earth during a solar eclipse?
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The Moon’s shadow. Moon blocks sunlight during solar eclipse.
The Moon’s shadow. Moon blocks sunlight during solar eclipse.
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Which object’s shadow falls on the Moon during a lunar eclipse?
Which object’s shadow falls on the Moon during a lunar eclipse?
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Earth’s shadow. Earth blocks sunlight to Moon during lunar eclipse.
Earth’s shadow. Earth blocks sunlight to Moon during lunar eclipse.
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What is the umbra in an eclipse shadow model?
What is the umbra in an eclipse shadow model?
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The darkest central shadow where light is fully blocked. Complete shadow forms when all light rays are blocked.
The darkest central shadow where light is fully blocked. Complete shadow forms when all light rays are blocked.
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