2. __ is the spinning of the Earth on its axis which causes day &night revolution geocentric rotation leap year

## Step 1<br />The question is asking for the term that describes the spinning of the Earth on its axis, which causes the cycle of day and night. The options provided are "revolution", "geocentric", "rotation", and "leap year".<br /><br />## Step 2<br />"Revolution" refers to the movement of one object around a central point or axis. In the context of Earth, this term is often used to describe its orbit around the Sun, which is a different concept from the spinning of Earth on its axis.<br /><br />## Step 3<br />"Geocentric" is a term that refers to the belief that the Earth is the center of the universe. This term does not describe the spinning of the Earth on its axis.<br /><br />## Step 4<br />"Rotation" is the term that accurately describes the spinning of the Earth on its axis. This spinning is what causes the cycle of day and night.<br /><br />## Step 5<br />"Leap year" is a term that refers to a year that has an extra day added to it to account for the fact that the Earth's orbit around the Sun is not perfectly even. This term does not describe the spinning of the Earth on its axis.