Rotation vs. Revolution

1. The two times in a year when day and night are nearly equal length, occurring when the Sun is directly above the equator.
4. The two times in a year when the Sun is at its greatest distance from the equator, resulting in the longest and shortest days of the year.
7. The collection of planets and other celestial bodies that orbit the sun. Our solar system includes Earth and seven other planets.
10. The time it takes for a planet to complete one full rotation on its axis. For Earth, this is 24 hours.
11. The angle at which a planet's axis is inclined from vertical. Earths is about 23.5 degrees and is responsible for the seasons.
12. The movement of a planet around the Sun. Earth's revolution takes about 365 days, defining a year.
13. an imaginary line around the middle of a planet, equidistant from the poles, dividing it into northern and southern hemispheres.
14. The force that attracts a planet towards the Sun, keeping it in orbit. It also holds everything on a planet's surface.

2. The path a planet follows as it revolves around the Sun. Orbits can be circular or elliptical.
3. Half of a spherical body, like a planet. Earth is divided into the Northern and Southern Hemisphere.
5. An imaginary line through the center of a planet around which it rotates. Earth's axis is tilted, which affects the seasons.
6. The spinning of a plant on its axis. For Earth, this process takes approximately 24 hours, resulting in day and night.
8. An elongated circle or oval shape. Most planetary orbits are elliptical rather than perfect circle.
9. Relating to outer space or the universe beyond Earth's atmosphere. Celestial bodies includes planets, stars, and seven other planets.
15. The time is takes for a planet to complete one full revolution around the Sun. For Earth, this is approximately 365 .25 days