Name _ Hour _

The Living Planet

) 1. In the video the volcano goddess Pele cursed man by turning them into (Salt Rock). circle one

2. Plate tectonics comes from the big pieces of crust called plates and tectonic which means to _

3. The rock layers in the Grand Canyon shows records of ancient seas, rivers, deserts, mountains, and lava flows datingback years old.

4. By counting life times, theologians estimated the earth was created in precisely at, (year) October zs"at 9 AM.

5. is" century wisdom stated that earth's landscape was fixed. However, the Edenborough volcanoes showed thatearth's engine had made recent changes.

6. In the is" century, it was believed that all rocks were laid down in water, but the intruded rock was made from_______ that had came up from below earth's surface.

7. Hadrian's wall, built in 200 AD by the Greeks, has survived 16 centuries. How old did radioactive dating suggest therocks making the walls are 4.6 years old.

8. While Alfred Wegner studied the weather in Antarctica, he suggested, that like glaciers, continents may have splitapart from a giant super continent called (Eurasia Pangaea). circle one

9. Scientist rejected Wegners ideas as ~_ because they could not understand what force would bestrong enough to plow through solid rock.

, -c, 10. Scientists thought the ocean floor was made up of original rocks formed at the creation of the earth, but dredgingbrought up no rocks older than million years old.

11. Harry Hess suggested a new explanation called Seafloor _

12. In California, new evidence supporting seafloor spreading was found. Scientists found that in some areas themagnetic north captured in the rock was pointing . Showing that magnetic north had changed.

13. Samples from around the world confirmed that 9 reversals had occurred in the last million years.

14. The research ship Glomar found that as the distance from the rift valley increased, the age of theocean floor rocks increased.

15. The rate the African and South American continents spreads apart is inch(es) a year.

16. The French and American research teams found in the bottom of the rift valley examples of _similar to the underwater features around Hawaiian volcanoes.

17. The outer part of the crust called the ( lithosphere asthenosphere) breaks like large egg shells called plates.

18. Earth's crust diving below another crust causing Japan's earthquakes is an area called a zone.

19.As the earth dives 50 miles below Japan, the crust melts providing the magma for _

20. currents caused by radioactive heating drives the theory of plate tectonics.

21. Kilauea in Hawaii is thousands of miles from a plate boundary. It is caused by a hot spots or _

22. Earthquakes, volcanoes, seafloor spreading, and mountain building are some of the supporting evidences of

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NAt•••. -----------------------~=====_w~=======__~----~---------____________ DATE CLASS _

'er 13-( .;TER'-Plate TectonicsI. Testing ConceptsIn the b14nk at the left, write the letter of the term or phrase that wrrectly completes each statement.

1. The oldest material of the ocean floor is about __ million years old,a. 100 h. 160 c. 400 d. 600

2. Tlie crust and upper mantle make up Earth's __ .- a. lithosphere h. asthenosphere c. shield d. continents

3. The youngest material of the ocean floor is found at mid-ocean __ .a. rifts h. basins c. trenches d. ridges

4. Less dense plates of the lithosphere float on the __ 'a. crust h. asthenosphere c. core d. atmosphere

5. The results of plate movement can be seen at __ 'a. rift zones h. ocean margins c. ocean floors

__ 16. The Glomar Chal/engtraided the theory of plate tectonics by proVlumg __ .a. high altitude photos of existing continentsb. samples of sediment from different locationsc. samples of older rockaway from mid-ocean ridgesd. direct measurements of the movement of continents

__ 17. Where plates move past one another, __ occur.a. volcanoes . c. deep-focus earthquakesb. transform faults d. ocean trenches

__ 18. The boundaries between two colliding plates are called __ .a. divergent b. convergent c. a transform fault

_"_ 19. Sea-floor spreading occurs because __ .a. new material is being added to the asthenosphereh. earthquakes break apart the ocean floorc. sediments accumulate at the area of spreadingd. molten material in the mantle rises to the surface

d. lithosphere

d. plate boundaries, __ 20. Studying the ocean floor, scientists found __ bands of magnetism.

a. very weak h. alternating c. no d. rectangular6. The __ are mountains forined by the collision of the Indian plate and the Asianplate.a. Alps h. Rockies c. Himalayas d. Appalachians

7. The presence of the same __ on several continents supports the idea of continentaldrift.a. fossils h. rocks c. neither a nor b d. both a and b

8. The solid center of Earth is thea. inner core h. asthenosphere c. lithosphere

9. The __ is the largest layer inside Earth.a. inner core "h. outer core c. mantle

d. mantle

d. crust

__ 10. The __ is the thinnest layer of Earth.a. inner core h. crust c. mantle d. outer core

__ 11. The idea that continents have moved horizontally through the seafloor is called __ .a. continental drift h. continental slope c. magnetism d. convection

__ 12. Plates move apart at __ boundaries.a. convergent h, stable c. divergent d. volcanic

__ 13. Ocean floor plates are __ than continental plates.a. thicker h. slower " c. older d. thinner

__ 14. The formation and alignment of new iron minerals reflect the fact that Earth's __ hasreversed itself several times in its past.a. magnetic field h. core c. asthenosphere d. gravity

__ 15. A lack of explanation for continental drift prevented many scientists from believing asingle supercontinent called __ existed.a. Glomar b. Glossoptais c. Pangaea . d. Mesosaurus

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Copyright GIoncoo Division 01MacmiUan/Mc:Graw-HinUsers 01 Mom" Eot1h Sdonce have tho publisher'. penni ••••• to ..,.,oduca this __

In the space at the left, write the tmn that best completes the statement.

________ -'-- 21. The innermost part of Earth is its __ .

_________ 22. A(n) __ is an underwater mountain range.

_-:- 23. Plates collide at a __ boundary.

_________ "24. Earth's thick, plasticlike layer is the __ .

_________ 25. A place where plates slide past one another is a _" _.

_________ 26. The main points of evidence for __ are fossils, rocks, and climat

_________ 27. The Glomar Cha~gathered information about rocks onthe

_________ 28. Earth's mantle is made mostly of silicon, magnesium, iron,and

_________ 29. The name __ comes from two words that mean "all land.'

_________ 30. Alfred Wegener believed that the __ were once joined.

89Copyright GIoncoo Division 01 MaaniIan/Mc:Graw-Hii

U••• 01 MemI EorfII Sdonce have tho publisher'. ponni •• ion io raproduce this pogo.