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Plate Tectonics
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Pangea: continents gether that broke apart two hundred million years ago
lithosphere: upper part of the mantle
plate: surface along which rocks break and move
crater: steep-walled depression around a volcanos vent
vent: an opening on Earths surface where magma is forced up and flows out as lava
volcano: opening in Earths surface that often forms a mountain when layers of lava and volcanic ash erupt and build up
fault: surface along which rocks break and move
earthquake: vibrations caused by breaking rocks along faults
tsunami: powerful seismic sea wave that can travel thousands of kilometers in all directions and that begins over an earthquake focus
tsunami: powerful seismic sea wave that can travel thousands of kilometers in all directions and that begins over an earthquake focus
surface waves waves of energy that reach Earths surface during an earthquake: travel outward from the epicenter and move rock particles up and down, and side to side
convection: current cycle of heating rising cooling and sinking that is thought to be the force behind plate tectioncs
continentaldrift: hypothesis proposed by Alfred Wegener that the states that continents have moved slowly to their current locations on Earth
athenosphere: plastic-like layer below the lithosphere
secondarywaves: waves that travel outward from an earthqukes focus and move through Earth by causing particles in rocks to vibrate at right angles to the direction of the wave
seismicwaves: energy waves that are produced at and travel outward from the earthquakes focus
primarywaves: waves that travel outward from an Earthquakes focus and cause particles in rocks to move back and forth in the same direction the wave is moving
outercore: liquid core that surrounds Earths solid inner core and that is made mostly of iron
mantle: largest layer inside Earth lying directly above the outer core and that is made mostly of silicon oxygen magnesium and iron
innercore: very dense solid center od the Earth that is made of mostly iron with smaller amounts of oxygen silicon sulfur or nickel
Plate Tectonics
Across:1. | current cycle of heating rising cooling and sinking that is thought to be the force behind plate tectioncs | 4. | largest layer inside Earth lying directly above the outer core and that is made mostly of silicon oxygen magnesium and iron | 7. | upper part of the mantle | 9. | waves that travel outward from an earthqukes focus and move through Earth by causing particles in rocks to vibrate at right angles to the direction of the wave | 10. | hypothesis proposed by Alfred Wegener that the states that continents have moved slowly to their current locations on Earth |
| 12. | continents gether that broke apart two hundred million years ago | 14. | energy waves that are produced at and travel outward from the earthquakes focus | 16. | surface along which rocks break and move | 18. | powerful seismic sea wave that can travel thousands of kilometers in all directions and that begins over an earthquake focus |
| | Down:2. | very dense solid center od the Earth that is made of mostly iron with smaller amounts of oxygen silicon sulfur or nickel | 3. | liquid core that surrounds Earths solid inner core and that is made mostly of iron | 5. | surface along which rocks break and move | 6. | waves that travel outward from an Earthquakes focus and cause particles in rocks to move back and forth in the same direction the wave is moving | 8. | powerful seismic sea wave that can travel thousands of kilometers in all directions and that begins over an earthquake focus |
| 10. | steep-walled depression around a volcanos vent | 11. | opening in Earths surface that often forms a mountain when layers of lava and volcanic ash erupt and build up | 13. | an opening on Earths surface where magma is forced up and flows out as lava | 15. | plastic-like layer below the lithosphere | 17. | vibrations caused by breaking rocks along faults |
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© 2012
PuzzleFast.com, Noncommercial Use Only
Plate Tectonics
Across:1. | current cycle of heating rising cooling and sinking that is thought to be the force behind plate tectioncs | 4. | largest layer inside Earth lying directly above the outer core and that is made mostly of silicon oxygen magnesium and iron | 7. | upper part of the mantle | 9. | waves that travel outward from an earthqukes focus and move through Earth by causing particles in rocks to vibrate at right angles to the direction of the wave | 10. | hypothesis proposed by Alfred Wegener that the states that continents have moved slowly to their current locations on Earth |
| 12. | continents gether that broke apart two hundred million years ago | 14. | energy waves that are produced at and travel outward from the earthquakes focus | 16. | surface along which rocks break and move | 18. | powerful seismic sea wave that can travel thousands of kilometers in all directions and that begins over an earthquake focus |
| | Down:2. | very dense solid center od the Earth that is made of mostly iron with smaller amounts of oxygen silicon sulfur or nickel | 3. | liquid core that surrounds Earths solid inner core and that is made mostly of iron | 5. | surface along which rocks break and move | 6. | waves that travel outward from an Earthquakes focus and cause particles in rocks to move back and forth in the same direction the wave is moving | 8. | powerful seismic sea wave that can travel thousands of kilometers in all directions and that begins over an earthquake focus |
| 10. | steep-walled depression around a volcanos vent | 11. | opening in Earths surface that often forms a mountain when layers of lava and volcanic ash erupt and build up | 13. | an opening on Earths surface where magma is forced up and flows out as lava | 15. | plastic-like layer below the lithosphere | 17. | vibrations caused by breaking rocks along faults |
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© 2012
PuzzleFast.com, Noncommercial Use Only