When the moon is closest to the earth, the position is called ?

Question

Accepted Answer

When the moon is closest to the Earth, the position is called **Perigee**.

Here's why:

*   **Perigee** is the point in the orbit of the Moon (or any satellite) when it is nearest to the Earth. This is a specific term used in astronomy to describe the closest approach.

Now, let's explain why the other options are incorrect:

*   **Umbra:** The umbra is the darkest part of a shadow, such as during an eclipse. It's not related to the Moon's distance from the Earth.
*   **Penumbra:** The penumbra is the partially shaded outer region of a shadow, also associated with eclipses. Like the umbra, it doesn't describe the Moon's orbital distance.
*   **Apogee:** Apogee is the point in the orbit of the Moon (or any satellite) when it is farthest from the Earth. This is the *opposite* of the question's condition, which asks about the closest point. Therefore, it is incorrect.

Therefore, **Perigee** is the only option that accurately describes the Moon's closest point to the Earth.