1. Standard 2 Objective 3 STUDY NOTES “PLATE BOUNDARIES"

2. 1 Two plates slide past each other horizontally at a _________ boundary. transform

3. 2 The Pacific Ring of Fire is a zone of active _________. volcanoes

4. 3 When the oceanic and continental lithospheres collide, the _______ plate _________. oceanic subducts

5. 4 Tectonic plates can include both oceanic and ___________ crust. continental

6. 5 Food, water, flashlights, and a portable radio are needed to _______ for earthquakes. prepare

7. 6 The ________ of an earthquake is the point on Earth’s surface directly ______ the earthquake’s focus. epicenter above

8. 7 The theory that explains why and how continents move is called _____ tectonics. plate

9. 8 An example of a _________ boundary is the San Andreas Fault in California. transform

10. 9 Convection, _____ push, and slab ____ work together to produce constant tectonic plate _______. ridgepull motion

11. 10 Frequent earthquakes in an area may indicate tectonic plate ___________. boundaries

12. 11 The hottest rock is found in __________ zones and under mid-ocean ___ valleys. subduction rift

13. 12 During a major earthquake, buildings may sway or ________. collapse

14. 13 The two sources of energy heating Earth’s mantle are radioactive _______ and heat from Earth’s _______. decay interior

15. 14 Subduction is when one plate goes ________ another. beneath

16. 15 Plates move away from each other at a mid- __________ ridge. mid-ocean

17. 16 If you are indoors during an earthquake you should stay away from ________ and objects that may fall; _____ in a doorway. windows stand

18. 17 As Australia drifted away from Asia, its animal life ________ into different forms than Asia. evolved

19. 18 The movement of heated materials ________ and the movement of cooled materials downward is called __________. upward convection

20. 19 ___________ usually occur at plate boundaries when rock in environments near tectonic plate boundaries experience great ______. Earthquakes stress

21. 20 When two oceanic plates collide the ________ plate ________. denser subducts

22. 21 The rise of the Himalayan Mountains changed world _____ patterns. wind

23. 22 Rock begins to sink when it has ______ and becomes denser. cooled

24. 23 At the center of a mid-ocean _____ is a ____ valley. ridgerift

25. 24 Tectonic _____ are blocks of __________.plates lithosphere

26. 25 The collision of two __________ plates results in the formation of _________. continental mountains

27. 26 Earth’s tectonic plate’s ______ when heat creates __________ currents in Earth’s mantle. move convection

28. 27 The breakup of Pangea changed the ____ of the continents and world ________. size climates

29. 28 A __________ plate boundary will pull the rest of the plate _____. subducting down

30. 29 Earthquakes generally occur at plate boundaries, where ______ on rocks is greatest. stress

31. 30 The Himalaya Mountains were formed in a ________ at a convergent boundary. collision

32. The End