Science tic tac toe
Across
- 4. drift of continents through time
- 7. outer part of earth
- 8. boundary when 2 plates come together
- 9. tectonics
- 12. trench,depression in the seafloor
- 13. fracture in rock
- 15. plates slide sideways past each other
- 18. upper layer of the earth's mantle
- 20. energy with wave like properties
- 21. intrusive igneous rock
- 22. ridge, chain of mountains
- 23. heat moves by touch
- 24. theory,explanation
- 25. physical force
Down
- 1. mass per unit of volume
- 2. spreading where tectonic plates split apart
- 3. solid layer of hot rock
- 4. current that transfers heat
- 5. plates move away from each other
- 6. hot dense ball of mostly iron
- 10. oceanic plate slides under continental plate
- 11. outermost shell
- 14. uses sound to measure and detect
- 16. rock from lava that cools fast
- 17. wave produced by an earthquake
- 19. third layer of the Earth
- 25. single supercontinent