0. When does the moon come between the sun and the earth?
A solar eclipse occurs when the moon comes directly between the sun and the earth. This alignment blocks the sunlight from reaching certain areas on Earth, either partially or totally, depending on the observer's location.
Option A: Lunar eclipse
Incorrect. A lunar eclipse occurs when the earth comes between the sun and the moon.
Option B: Solar eclipse
Correct. This happens when the moon is positioned between the sun and the earth.
Option C: Side real day
Incorrect. A sidereal day refers to the time taken by Earth to complete one rotation relative to distant stars, not related to the eclipse.
Option D: Full moon day
Incorrect. A full moon occurs when the earth is between the sun and the moon, which is the opposite of a solar eclipse.