Layer of Earth made up of the crust and upper mantle: 1. lithosphere
long, underwater mountain ranges: 6. mid-ocean ridge
idea that the world's land masses are slowly moving over time: 9. continental drift
magnetic qualities "frozen" into rocks when they are formed showing the direction of the magnetic field at that time: 8. paleomagnetism
describes how Earth's plates move and what happens when they interact with each other: 10. plate tectonics
circulating flow of a gas or liquid due to density differences: 11. convection
force that pulls objects towards the Earth: 12. gravity
boundary where two tectonic plates are moving away from each other: 4. divergent boundary
boundary where two tectonic plates are moving towards each other or colliding: 3. convergent boundary
upper part of the mantle that is........ 2. asthenosphere
boundary where two tectonic plates move in opposite directions alongside each other: 5. transform boundary
place where one plate gets pushed under another plate: 14. subduction zone
deepest part of the ocean; steep-sided canyon: 7. ocean trench
super-continent made of all the continents that existed millions of years ago: 15. pangea
section of the lithosphere that slowly moves over the asthenosphere, carrying pieces of continental and oceanic crust: 13. tectonic plate
*numbers 10 and 13 are the same thing*
