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STUDY NOTES – Standard 2, Objective 3 PLATE BOUNDARIES
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1 Two plates slide past each other horizontally at a _________ boundary. transform
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2 The Pacific Ring of Fire is a zone of active _____________. volcanoes
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3 When the oceanic and continental lithospheres collide, the _______ plate _________. oceanic subducts
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4 Tectonic plates can include both oceanic and ___________ crust.
continental
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5 Food, water, flashlights, and a portable radio are needed to _______ for earthquakes. prepare
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6 epicenter The ________ of an earthquake is the point on Earth’s surface directly ______ the earthquake’s focus. above
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7 The theory that explains why and how continents move is called _____ tectonics. plate
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8 An example of a _________ boundary is the San Andreas Fault in California. transform
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9 Convection, _____ push, and slab ____ work together to produce constant tectonic plate _______. ridge pull motion
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10 Frequent earthquakes in an area may indicate tectonic plate ___________. boundaries
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11 The hottest rock is found in __________ zones and under mid-ocean ___ valleys. subduction rift
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12 During a major earthquake, buildings may sway or ________. collapse
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13 The two sources of energy heating Earth’s mantle are radioactive _______ and heat from Earth’s _______. decay interior
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14 Subduction is when one plate goes ________ another. beneath
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15 Plates move away from each other at a mid-__________ ridge.
mid-ocean
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16 If you are indoors during an earthquake you should stay away from ________ and objects that may fall; _____ in a doorway. windows stand
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17 As Australia drifted away from Asia, its animal life ________ into different forms than Asia. evolved
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18 upward The movement of heated materials ________ and the movement of cooled materials downward is called __________. convection
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19 ___________ usually occur at plate boundaries when rock in environments near tectonic plate boundaries experience great ______. Earthquakes stress
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20 denser When two oceanic plates collide the ________ plate ________.
subducts
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21 The rise of the Himalayan Mountains changed world _____ patterns.
wind
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22 Rock begins to sink when it has ______ and becomes denser. cooled
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23 ridge rift At the center of a mid-ocean _____ is a ____ valley.
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24 plates Tectonic _____ are blocks of ___________. lithosphere
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25 continental The collision of two __________ plates results in the formation of __________. mountains
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26 Earth’s tectonic plate’s ______ when heat creates __________ currents in Earth’s mantle. move convection
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27 The breakup of Pangea changed the ____ of the continents and world ________. size climates
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28 subducting A __________ plate boundary will pull the rest of the plate _____. down
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29 Earthquakes generally occur at plate boundaries, where ______ on rocks is greatest. stress
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30 The Himalaya Mountains were formed in a ________ at a convergent boundary. collision
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The End!
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