Question

13/27
which of the following is true for a lunar eclipse?
the sun is casting a shadow on the moon.
the earth is casting a shadow on the sun.
the moon is casting a shadow on the earth.
the earth is casting a shadow on the moon.

Explanation:

A lunar eclipse occurs when the Earth comes between the Sun and the Moon, and the Earth's shadow falls on the Moon. Let's analyze each option:

• "The sun is casting a shadow on the moon": The Sun doesn't cast a shadow on the Moon in a lunar eclipse (that's more related to a solar eclipse's mechanics but not the case here).
• "The Earth is casting a shadow on the sun": Impossible, as the Earth is much smaller and the Sun is a massive light source; Earth can't shadow the Sun in this context.
• "The moon is casting a shadow on the Earth": This is a solar eclipse (Moon between Sun and Earth, shadow on Earth).
• "The Earth is casting a shadow on the moon": This matches the definition of a lunar eclipse, where Earth's shadow (umbra/penumbra) covers the Moon.

Answer:

D. The Earth is casting a shadow on the moon.