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Download Earth Science Plate Tectonics and How Oceans/Mountains Affect
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Earth Science Plate Tectonics and How Oceans/Mountains Affect Climate • Review and game! Plate Tectonics • Crustal plates move causing certain geological features to form such as volcanoes, mountains, earthquakes, etc • There are 4 main types of boundaries that we discussed: – Divergent- pull apart creating volcanoes, – Convergent- two crustal plates come together creating fold mountains – Transform- two plates slide past each other creating earthquakes – Subduction- two ocean plates or an ocean and crustal plate collide creating trenches and volcanoes. Let’s quickly review how mountains and oceans can affect climate. • Mountains: • Can block rain and wind causing a different climate – Can cause a drier area/desert on one side of the mountain due to a rain shadow • Have breezes that flow at night and day in different directions depending on where the high pressure (cool air) is. What is climate? 1 Rain Shadows • On the windward side of a mountain range, air rises, cools, and drops its moisture. • On the leeward side of a mountain range air descends, heats up, and dries the land. Windward Vs. Leeward • Rainfall occurs on the windward side of the mountain where the air is rising. • Cool & Wet • It is dry on the leeward side of the mountain where the air is sinking. • Warm & Dry Rain Shadows Mountains greatly affect the climate. They act as barriers blocking rain and wind. What do you think a rain shadow is? One side of the mountain may have a very different climate from the other side. In some cases mountains create a shadow. This is where rain does not fall. Deserts can form in the rain shadow regions. During the day the surface of the mountain heats the air high up in the atmosphere quicker than the valley floor can. Wind moves from the valley where the air pressure is high toward the mountains creating a Valley Breeze During the night the surface of the mountain cools the air high up in the atmosphere quicker than the valley floor can. Wind moves from the mountain where the air pressure is high & cool toward the valley creating a Mountain Breeze Oceans • Oceans • Create breezes during the day and night that affect the climate of the shore • Ocean currents such as the Gulf Stream can make an area much Warmer than an area not near the ocean at the same latitude. (example: part of inner Canada and England—England’s climate is warmer due to the warm Gulf Stream ocean current). Land BREEZE… Land Breezes At night the lands cools off faster than the sea. Wind blows from the land to the sea. SEa BREEZE… Sea Breezes • The land cools and heats faster than the ocean. Water holds heat longer than land, and takes longer to heat or cool. During the day, the land gets hotter faster than the water. The heated air rises; wind from the cooler sea blows in to take the place of that warmer air. These happen during the day! Hawaii is in the center of the “ring of fire” and is caused by ____ . A. trench B. Hot spots; underwater volcanoes C. earthquake D. All of these B. Hot spots; underwater volcanoes Underwater ______ occur where plates move apart. A. cities B. mountains C. trenches earthquakes D. ridges volcanoes • B. mountains Continental crust is __________ than oceanic crust. A. less dense B. More dense C. thinner D. All of these B. More dense A deep area in the ocean where one plate sinks beneath another. A. Divergent Boundary- creating a volcano B. Subductive boundary—creating a trench C. Volcano Transform Boundary– creating an earthquake D. None of these B. Subductive boundary—creating a trench What is a sudden release of energy in the Earth’s crust, causing the ground to shake called? A. Volcanoes B. Earthquakes C. Both A and B D. None of these • B. Earthquakes A break in the Earth’s crust is called a _______ . A. fault line B. crack C. compound fracture D. coffee break A. fault line This picture illustrates a ___ boundary. A. Divergent B. Transform C. Convergent D. Subductive B. Transform A mountain formed by lava and ash. A. Volcano B. Earthquake C. Hurricane D. Folded mountains A. Volcano What is a good effect that a volcano can have? A. clears land of trees B. creates islands in the ocean C. reduces the population D. None of these B. Creates islands in the ocean Why is Hawaii made of volcanoes? A. Plates are moving apart B. Earthquakes C. A hot spot exists D. To attract tourists C. A hot spot exists What causes volcanoes? A. Oceanic plates colliding with continental plates and subducting under them. B. Plates pulling apart from one another (diverging) C. Hot spots D. All of these D. All of these What can happen when a transform fault suddenly releases its energy? A. A hurricane B. A volcano C. A Storm D. An earthquake D. An earthquake When continental plates collide, ______ is formed. A. Folded Mountains B. Dome Mountains C. Volcanoes D. All of these A. Folded Mountains The Earth as one large land mass was called ____ . A. Tsunamis B. Pangorld C. Pangea D. Seismograph C. Pangea The theory that plates move upon the Earth. A. Mass movement B. Crust movement C. Plate Tectonics D. Newton’s Laws of Gravity C. Plate Tectonics Where magma pushes two plates apart are called ____ . A. divergent boundaries B. Convergent boundaries C. trenches D. tug-of-wars A. divergent boundaries The layer on the Earth in which the crust floats. A. Mantle B. Crust C. Inner Core D. Turtle A. Mantle The outer layer of the Earth is called the _____ . A. mountain range B. core C. crust D. mantle C. crust What is the inner most part of the Earth? A. Trench B. mantle C. Crust D. Core D. Core Beginning with the outer most layer, Earth’s layers are the ____ . A. crust, magma, and core B. crust, mantle, core C. core, mantle, and crust D. core, magma, and crust B. crust, mantle, core
