Unit 8 Science Section 1 The Structures Of The Earth

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Across
  1. 2. a very hard rock made of small particles of igneous rocks
  2. 3. a basic substance made of atoms that are chemically alike
  3. 7. melted material usually found deep inside the earth, it is made up of minerals
  4. 8. the central part of something, the part that is located in the center
  5. 11. degree of brightness of shine on a surface
  6. 13. an imaginary circle around the earth exactly halfway between the poles of the earth
  7. 15. something made up of several different materials
  8. 16. the outside rock layer that covers the earth
  9. 17. formed as materials settled to the bottom of a liquid
  10. 19. very fine mineral particles
Down
  1. 1. the common solid materials found on Earth that makes up rock
  2. 4. description of something that has changed form, a rock that has changed from one form to another
  3. 5. the way in which something splits apart
  4. 6. a clustered mass of individual particles held together
  5. 7. the earth layer just below the crust
  6. 9. the study of the earth, both its physical parts and its history
  7. 10. the force of weight pushing against or squeezing something
  8. 12. the physical features of the earth, mountains, valleys, and hills are landforms
  9. 14. thickly or tightly packed together
  10. 18. formed by great heat or actions of volcanoes