Science Crossword

4. Organelle that is not present in both prokaryotes and red blood cells
6. The name of the point on the surface of the earth directly above the focus during an earthquake
9. The number of valence electrons in a neutral atom of oxygen (spell out the answer)
10. The planet of similar size to Earth that has no moons
12. Largest oceanic plate on Earth
14. The acronym PMAT stands for the four steps of what process
15. A positively-charged ion
18. Biological polymer that makes up plant cell walls
19. Scale that measures an earthquake’s intensity by the total energy released by a fault
20. Planet with the greatest axial tilt in the Solar System

1. The rock which most oceanic crust consists of
2. The process (which can occur at a reverse fault) where an oceanic plate is pushed underneath a continental plate
3. We describe muscle cells as ___ when referring to their nuclei
5. Prokaryotes have no membrane bound organelles, in stark contrast to…
7. The family of the Periodic Table that contains unreactive gases
8. The largest volcano in the Solar System
11. The type of star the Sun is
13. Largest satellite of Jupiter
16. Negatively-charged subatomic particle that can be found orbiting around the nucleus of an atom
17. The element with atomic number 16