PPT-Plates move apart. (Page 22)

Key Concept BEFORE you learned The continents join and break apart The sea floor provides evidence that tectonic plates move The theory of plate tectonics helps explain how the plates move. - To be able to explain how mountains are formed . Plate Tectonics . The Earth's surface is made up of a series of large plates (like pieces of a giant jigsaw puzzle) called tectonic plates. . These plates are in constant motion travelling at a few centimetres per year. This is called continental drift.. Imagine the Earth as a hardboiled egg…………………….. The thin brittle shell is the crust that humans live on.. The thick jelly like white is the deep hot magma beneath the surface.. The yellow yolk is the core of the earth.. Evolution of the Earth. Cracks in the Earth’s Crust. The . crust. , when it is solid, acts as a . heat insulator. for the hot interior of the Earth.. The molten material in the mantle, . magma. , below the crust builds up tremendous heat and pressure. . Standard . S6E5.d . Recognize that lithospheric plates constantly move and cause major geological events on the earth’s surface.. What You Will Learn. Describe the three types of tectonic plate boundaries. . What do you think?. Recall. :. Theory of Plate Tectonics…. Plate Tectonics . refers to the movements of plates (large segments of continents and ocean) around the Earth’s surface.. These land masses are seen as a giant . It is difficult for scientists to estimate the exact amount. How do they Move?. Plates move by floating on top of the Upper mantle (Asthenosphere). The plates move in a certain direction based on the flow of magma beneath them. Plates can move apart…. Plates in the middle ocean often move apart…DIVERGE. Plates in the middle ocean often move apart…DIVERGE. The middle of our ocean has the thinnest crust and THAT’S mostly where NEW Earth comes from!. 50 cm farther apart in the next 20 years.. Solution . Write an equivalent rate.. Tracking Tectonic Plates. Scientists use lasers to track the movements of tectonic plates. They bounce laser light off satellites and measure the distance from each satellite to the ground. As the plates move, the distance changes. With this tracking system, scientists know exactly how much tectonic plates move each year.. What is a capacitor?. 2 parallel conducting plates, separated by an insulator. Insulator prevents the capacitor plates from sparking a discharge to each other. Step one: Charging. When the switch is closed, electrons. plates meet. In what ways do the plates move? . 3 types of plate movements we need to know: . Convergent: . Plates move together. Can be split into destructive (oceanic and continental crust) and collision (continental and continental) . Plate tectonic cycle . Plate tectonics -. What is plate tectonics?. Concept that features of the earth and earth phenomena (earthquakes, volcanoes) are caused by motion of plates of rigid lithosphere moving on a plastic asthenosphere. The thin brittle shell is the crust that humans live on.. The thick jelly like white is the deep hot magma beneath the surface.. The yellow yolk is the core of the earth.. Tectonic Map of the World. A tectonic plate is like the hard shell on a boiled egg that has been cracked into . 1. 2. Oceanic crust. 1-Convection currents pull plates apart. . 3-As the plates move apart, magma from the mantle rises to fill the gaps and forms new oceanic crust.. 4-A mid-ocean ridge is formed by the new crust. . • About evidence for plate movement from the sea floor . • How scientists developed the theory of plate tectonics. Continents change their position over time (Page 14). *Key Concept. BEFORE, you learned .