Astronomy

5. composed mainly of rock, ice, and frozen gasses; eccentric orbits
6. volcanic rock made from cooled volcanic lava
7. the point directly above your head on the imaginary celestial dome
9. the field around a planet that is generated by movement in a liquid metal core
13. waves that travel through a planet like soundwaves through the air
16. the emission of particles, such as electrons
17. the number of waves that pass in a cycle
19. slow motions within the mantle of Earth move large segments of the crust
21. increasing moon phase
22. curved, sickle-shaped moon phase
23. the horizontal line that is halfway between the north and south pole
25. the entire range of wavelengths of radiation

1. highest energy wavelength, deadly to humans
2. an imaginary horizontal line on the globe used to measure distances N-S
3. O3, good absorber of high energy wavelengths
4. decreasing moon phase
8. the vertical great circle that passes through the poles
10. whenever any part of either Earth or the Moon enters the shadow of the other
11. hump-shaped moon phase
12. an imaginary vertical line on the globe used to measure distances E-W
14. the atmospheric insulation that keeps heat in
15. cosmic debris that enters the atmosphere and makes it to the ground
18. high energy wavelength, just outside of visible light
20. low energy wavelength, heat energy
24. rocky bodies that orbit the Sun, mostly between Mars and Jupiter