Space Unit

1. the tendency of something to stay in rest or in motion
6. the path of a celestial body in its revolution about another
7. occurs twice a year in summer and winter indicating the longest and shortest days
8. influence that results in motion or movement
9. a single complete turn of the Earth around the sun
10. the property of a body that causes it to have weight
12. any celestial body orbiting around a planet or star
15. a small frozen mass that travels around the sun
17. a system of timekeeping that defines divisions of the year
19. a celestial body that revolves around the sun
20. the second of Newton's laws
22. the imaginary straight line on with Earth rotates
23. the oval shape of the Earth's path as it orbits the sun

2. the first of Newton's laws
3. the force of attraction between all masses in the universe
4. a celestial body of hot gases that radiates energy
5. a configuration of stars as seen from earth
11. the natural periods into which the year is divided by the equinoxes and solstices
13. occurs twice a year in fall and spring indicating the days of equal hours of day and night
14. the third of Newton's laws
16. the act of turning as if on an axis
18. a mass that enters earth's atmosphere becoming incandescent
21. the vertical force exerted by a mass as a result of gravity