8th Grade Science Terms Extra Credit 3/14/25

Edit Answers
1234567891011121314151617181920212223
Across
  1. 2. A section of the lithosphere that slowly moves over the asthenosphere
  2. 3. the theory that the pieces of the Earth's lithosphere are in constant motion
  3. 4. a deep valley that forms when two plates move apart
  4. 5. the highest part of a wave
  5. 9. observations and conclusions that have been repeated
  6. 10. the term used to describe the metamorphic rocks that have grains arranged in parallel layers or bands
  7. 14. the name of the supercontinent that began to break apart 200 million years ago
  8. 15. the number of complete waves that pass a given point in a certain amount of time
  9. 16. the transfer of thermal energy by the movement of a fluid
  10. 17. a plate boundary where two plate move away from each other
  11. 21. a plate boundary where two plates move past each other in opposite directions
  12. 22. the process by which oceanic crust sinks beneath a deep ocean trench and back into the mantle
  13. 23. the preserved remains or traces of an organism that lived in the past
Down
  1. 1. a wave made up of a combination of changing electric field and changing magnetic field
  2. 6. the energy transferred through space by electromagnetic waves
  3. 7. a plate boundary where two plates move towards each other
  4. 8. an undersea mountain chain
  5. 11. a deep valley along the ocean floor
  6. 12. the process by which molten material adds new oceanic crust to the ocean floor
  7. 13. the hypothesis that the continents slowly move across the Earth's surface
  8. 18. igneous rock that forms from lave on Eartj;s surface
  9. 19. coal, oil, or natural gas that forms over millions of years from the remains of ancient organisms
  10. 20. a break in Earth's crust