Earth and Moon Vocab

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Across
  1. 4. bright, rugged, heavily cratered regions of the moon
  2. 5. 3D geometric shape that looks like a flat sphere at the top & bottom
  3. 8. propagate acoustic and pressure waves of energy that travel through the interior of stars or planets
  4. 10. charged particles from the sun interacting w/ earth's magnetic field, and collide with gases causing nitrogen and oxygen atoms to glow
  5. 11. vast complex of absorbing interstellar dust clouds that split the bright band of the milky way in half
  6. 13. layer of gases held around a planet, star, or moon by gravity
  7. 16. long, narrow, trench like valley or depression on the surface of the moon
  8. 18. dark volcanic plains on the surface of the moon
  9. 19. geological process where the denser tectonic plate dives beneath a lighter plate & sinks in the Earth's mantle at a convergent boundary
  10. 20. bulk movement of plasma or gas inside a star or celestial body that transports thermal energy outward
  11. 21. natural process where gases in the atmosphere trap heat and keep surface warm to support life
  12. 23. moon passes directly between earth and sun blocking sunlight
  13. 24. amount of mass packed into a specific volume, measured in units like kg/m3 or g/cm3
  14. 25. earth's outer layer broken into massive slabs of rock that glide over a hotter, semi-fluid layer in the upper mantle
Down
  1. 1. long, narrow, bright streaks of pulverized rock & fine ejecta on moon
  2. 2. earth is directly between sun & moon casting a shadow on the moon
  3. 3. biochemical processes by which plants, algae, & cyanobacteria convert light energy from the sun into mechanical energy
  4. 6. supercontinent that combined almost all of earth's land 175 to 335 million years ago
  5. 7. bowl-shaped depression/hollowed-out area commonly found on the moon
  6. 9. seismic body waves move the ground side to side or up and down perpendicular to the direction the wave travels
  7. 12. apparent curving of the path of a moving object like air, after, or a rockets, caused by a planet's rotation
  8. 14. spontaneous breakdown of unstable atomic nuclei into more stable forms by emitting radiation of subatomic particles
  9. 15. the fastest seismic body waves generated by earthquakes, they compress and expand the grouble back and forth in the same direction of the waves
  10. 17. when orbiting celestial body's rotational periods equals it's orbital period
  11. 22. thick solid layer of silicate rock located between the crust & outer core