Which shadow region corresponds to a partial eclipse?

Which shadow region corresponds to a partial eclipse?

• A. Umbra
• B. Antumbra
• C. Penumbra
• D. Exumbra

Answer: (C)

This question tests how the Sun’s light is blocked by the Moon during an eclipse and what observers see in different shadow regions. A partial solar eclipse happens when you are in the penumbra—the outer part of the Moon’s shadow—where only part of the Sun is obscured, so you see a fraction of the Sun covered by the Moon. In the inner region, the umbra, the Sun is completely hidden, producing a total eclipse. Beyond that, the outer region called the antumbra occurs when the Moon covers the center of the Sun but not its edges, leading to an annular eclipse where a bright ring surrounds the Moon. Exumbra is not where a partial eclipse is observed. So the best answer for a partial eclipse is the penumbra.

This question tests how the Sun’s light is blocked by the Moon during an eclipse and what observers see in different shadow regions. A partial solar eclipse happens when you are in the penumbra—the outer part of the Moon’s shadow—where only part of the Sun is obscured, so you see a fraction of the Sun covered by the Moon. In the inner region, the umbra, the Sun is completely hidden, producing a total eclipse. Beyond that, the outer region called the antumbra occurs when the Moon covers the center of the Sun but not its edges, leading to an annular eclipse where a bright ring surrounds the Moon. Exumbra is not where a partial eclipse is observed. So the best answer for a partial eclipse is the penumbra.