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Earth’s Layers Convection Currents Continental Drift Sea-Floor Spreading Plate Tectonics $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $500 $500 $500 $500 $500 Earth’s Layers Which of the Earth’s layers has the highest temperature? Core $100 Earth’s Layers Which of the Earth’s layers is the thinnest? Crust $200 Earth’s Layers Earth is like a giant magnet because of convection currents in what layer? Outer core $300 Earth’s Layers Continental crust is made mostly of the rock_____. Granite $400 Earth’s Layers Does pressure increase or decrease inside Earth from the crust to the core? It increases $500 Convection Currents The transfer of heat by the movement of particles in fluids is called__________? Convection $100 Convection Currents $200 Why do Earth’s plates move? Convection currents in the mantle cause the plates to move. Convection Currents The transfer of energy through space is _______. Radiation $300 Convection Currents The transfer of heat between objects that are touching is ____. Conduction $400 Convection Currents What happens to hot and cold materials inside the mantle? Hot materials rise, while cooler materials sink. $500 Continental Drift What is subduction and what does it do? Happens in deep-ocean trenches or convergent boundaries. One plate moves under another tectonic plate and sinks into the mantle. $100 Continental Drift What is the process in which continents slowly move called? Continental drift $200 Continental Drift What is a spreading boundary? Boundaries that move away from one another $300 Continental Drift What is a sliding boundary? Boundaries that move past each other in opposite directions side by side. $400 Continental Drift The asthenosphere occurres between which two layers and causes what. It occurs between the crust and the mantle. It causes continental drift. $500 Sea-Floor Spreading What happens in sea-floor spreading? New rock forms $100 Sea-Floor Spreading $200 Continental plates that move apart form _______ valleys. Rift Sea-Floor Spreading $300 Mid-ocean ridges occur at ________ boundaries. Spreading Sea-Floor Spreading $400 The oceanic crust is made of ___________. Basalt Sea-Floor Spreading $500 Where does sea-floor spreading take place? Lithosphere Plate Tectonics What is the boundary where two plates push together called? Colliding boundary $100 Plate Tectonics Name the processes that happen as a result of different kinds of boundaries. Mountain ranges, deepocean trenches $200 Plate Tectonics Two plates move past each other in opposite directions at a __________ boundary. Sliding $300 Plate Tectonics What is a colliding boundary? Boundaries that push towards each other $400 Plate Tectonics Name three kinds of plate boundaries. Colliding, Spreading, Sliding $500