7th Grade Science

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Across
  1. 4. The cell's barrier to the outside
  2. 5. A type of boundary that occurs when two tectonic plates move away from each other
  3. 6. Remains of past organisms preserved
  4. 8. What things are made of
  5. 9. maintaining stable internal state
  6. 10. the process of atoms or molecules arranging into a well-defined, rigid crystal lattice in order to minimize their energetic state
  7. 12. powerhouse of the cell
  8. 13. the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
Down
  1. 1. a tectonic plate boundary where two plates are moving towards each other, causing them to collide
  2. 2. The periodic table's horizontal rows
  3. 3. a geological process where one tectonic plate slides beneath another
  4. 4. Atoms bounded together
  5. 7. 15 naturally occurring metallic elements
  6. 9. an educated guess to be tested
  7. 11. The periodic table’s vertical columns