Science - Extended Vocab - Plate Tectonics & Earth Processes

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Across
  1. 1. pure substance that consists entirely of one type of atom
  2. 7. a scientist who studies fossils
  3. 9. a trace of an ancient organism preserved in rock
  4. 12. rock layer formed when magma hardens beneath the surface
  5. 13. an imprint of the outside of the body in rock
  6. 16. units of measure equal to 1/100th of a metre
  7. 17. an extremely dry area with little water and plants
  8. 20. a period of time
  9. 21. information obtained with sensors
  10. 22. the resistance of a soil to breaking apart
Down
  1. 1. change in an organism over time
  2. 2. a copy of the shape of an organism
  3. 3. a biome where grasses are the main plant life
  4. 4. a mixture of mineral particles and organic materials that covers the land, in which plants grow
  5. 5. a crack in the earth's crust
  6. 6. a large area of land covered with trees
  7. 8. length of time required for half of the radioactive atoms in a sample to decay
  8. 10. no longer in existence
  9. 11. grassland grasses and scattered trees adapted to a tropical wet climate
  10. 14. when rock layers or eroded or when sediment is not deposited for a long time
  11. 15. the look and feel of a rocks surface
  12. 18. rock layer formed when lava flows onto the surface and hardens
  13. 19. facts showing if a hypothesis or belief is true or valid
  14. 23. a particular period in history