Earth in Space

The study of the moon, stars, and other objects in space is called ____________.

The imaginary line that passes through Earth's center and the North and South poles is Earth's _____________.

The movement of one object around another is called ___________________.

Earth follows a path as it revolves around the sun. This path is called ___________.

Earth's rotation causes _______________.

Earth moves through space in two major ways: __________ and __________.

A ___________ is a system of organizing time that defines the beginning, length, and divisions of a year.

Earth has ___________ because its axis is tilted as it revolves around the sun.

Earth's axis is always tilted at an angle of _________.

____________ are when the sun reaches its greatest distance north or south of the equator twice each year.