1. STUDY NOTES – Standard 2, Objective 3 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
epicenter
The ________ of an earthquake is the point on Earth’s surface directly ______ the earthquake’s focus.
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 _______.
ridge
pull
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
upward
The movement of heated materials ________ and the movement of cooled materials downward is called __________.
convection

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

21. 20 denser When two oceanic plates collide the ________ plate ________.
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
ridge
rift
At the center of a mid-ocean _____ is a ____ valley.

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

26. 25
continental
The collision of two __________ plates results in the formation of __________.
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
subducting
A __________ plate boundary will pull the rest of the plate _____.
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!