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- 1. Multiple Choice
The youngest material of the ocean floor is found at mid-ocean _________.ridgestrenchesbasinsrifts - 2. Multiple ChoiceThe presence of the same ________ on several continents supports the idea of continental drift.rocksfossilsboth fossils and rocksneither fossils nor rocks
- 3. Multiple ChoiceA lack of evidence for continental drift prevented many scientists from believing a single supercontinent called _________ existed.GlossopterisPangaeaGondwanalandMesosaurus
- 4. Multiple ChoiceThe theory of _______ states that Earth’s crust and upper mantle are broken into sections that are in constant, slow motion.plate tectonicscontinental driftseafloor spreadingdivergent boundaries
- 5. Multiple ChoiceMatching ________ on different continents are evidence for continental drift.weather systemsriver systemsrock structureswind systems
- 6. Multiple ChoiceMany scientists think hot plastic-like rock in the mantle is forced upward toward the surface, cools, and sinks. This process is called a(n) _________.earthquakeconvergent boundaryvolcanoconvection current
- 7. Multiple ChoiceThe _________ is the thinnest layer of Earth.outer coreinner coremantlecrust
- 8. Multiple Choice_______ are formed when two continental plates collide.Mountain rangesTransform faultsRift valleysVolcanoes
- 9. Multiple ChoiceThe theory of continental drift was first proposed by __________.Thomas EdisonAlfred WegenerBenjamin FranklinHarry Hess
- 10. Multiple ChoiceThe theory of seafloor spreading was first proposed by __________.Thomas EdisonHarry HessBenjamin FranklinAlfred Wegener
- 11. Multiple ChoiceWhich of the following was NOT a reason that many scientists refused to listen to Wegener’s ideas?he didn’t have evidence to back his ideasthey were just plain meanmost geologists at the time thought it was impossible for continents to movehe was a meteorologist
- 12. Multiple ChoiceWhat is the correct order (starting from the surface) of Earth’s layers?mantle, outer core, inner core, crustcrust, mantle, outer core, inner coreouter core, inner core, crust, mantlecrust, outer core, inner core, mantle
- 13. Multiple ChoiceWhich layer of Earth is made up partly of crust and partly of mantle material?lithospheremantleasthenospherecrust
- 14. Multiple ChoiceThe layer of caramel-like consistency that flows and moves the plates of the Earth is called the ________.mantlelithospherecrustasthenosphere
- 15. Multiple ChoiceThe _______ is the thickest layer of the Earth at 1800 miles thick. This layer contains most of the mass of the Earth.crustmantleouter coreinner core
- 16. Multiple ChoiceThe _________ is so hot that the metals in it are all in the liquid state.crustmantleouter coreinner core
- 17. Multiple Choice_________ currents carry heat from the hot inner core to the cooler outer mantle and back again.RiverRadiationConvectionConduction
- 18. Multiple ChoicePlates move apart at _________ boundaries.volcanicdivergentconvergenttransform
- 19. Multiple ChoiceThe San Andreas Fault in California is an example of a ________.divergent boundaryconvergent boundarytransform faultsubduction zone
- 20. Multiple ChoiceWhich type of plate boundary occurs at B?convergentdivergenttransformcountry
- 21. Multiple ChoiceThe feature labeled C represents some of the deepest spots on the ocean floor. These areas are called ___.mid-ocean ridgetrenchesdeep-sea ventabyssal plain
- 22. Multiple ChoiceThe feature labeled D is part of the continuous underwater mountain range that circles Earth. It is called ___.mid-ocean ridgetrenchesdeep-sea ventabyssal plain
- 23. Multiple ChoiceWhich type of plate boundary is shown at A?transform boundaryconvergent boundarydivergent boundaryfractured boundary
- 24. Multiple ChoiceWhen plates slide past one another, _________ occur.divergent boundariesconvection currentssubduction zonestransform faults
- 25. Multiple ChoiceWhat technology did scientists use in the mid-1900s to map the mid-ocean ridge?sonarsubmarinessatellitesdeep-sea diving
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