Across
- 12. by mantle convection the lithosphere plates ride over soft ductile layer called
- 13. tend to go upward and the pressure is reduced this triggers the melting of magma called melting
- 18. of showing that rocks or geologic events from different places are of the similar age
- 19. broken into several segments called
- 20. radioactive isotopes of an element
Down
- 1. in which solid substances are converted into liquids by adding heat is known as
- 2. plates pull apart from each other where earths tectonic plates are moving apart
- 3. rock layers are also called
- 4. by particle by particle bed by bed and layers are piled on top of each other
- 5. when plates move alongside each other in different directions
- 6. when plates crush into each other
- 7. of semi liquid hot molten rocks located beneath the earth
- 8. fossil,know as guide fossils or indicator fossils
- 9. of assigning a chronological value to an event in the past
- 10. of solid rock that is typically buried beneath soil
- 11. time,provides a system of chronologic measurements relating stratigraphy
- 14. to correlation the description and interpretation of stratified elements and rocks on and within the earth
- 15. is also known as bedding
- 16. outermost rigid layer is called
- 17. melting,when water or carbon dioxide melting points rock is added to hot rocks