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Dynamic Earth Chap 3
Science Test
| Question | Answer |
|---|---|
| MC New ocean floor is created at the | Midocean Ridge or Divergent Boundary |
| MC The formations that run down the centers of midocean ridges are called | Riftvalleys |
| MC Subduction occurs at | Trenches and convergent boundary |
| MC Strike slip boundaries occur where two plates | grind past each other and slip past horosantaly |
| MCBoth plates buckle upward when | the continental plates collide |
| MC Compared to the oldest rocks on the ocean floor, the oldest rocks on land are | muchh older |
| MC What is the name of the supercontinent from which all modern continents came? | Pangea |
| MC According to the most widespread hypothesis, the source of the forces that move plates is | Convection Currents |
| MC The deepest parts of the oceans are | Trenches |
| MC The theory of continental drift was developed by | Alfred Wegener |
| MC Old ocean floor is destroyed, absorbed by the earth, and remelted beneath | Trenches |
| MC Magnetic stripes in ocean floor rocks tell us that | The poles reverse |
| MC At the midocean ridge, continental plates are | seperating |
| MC The lithosphere | topmost solid part of earth upper mantle top crust |
| MC Most of the molten rock produces during subduction | melts and becomes part of mantle |
| MC Continental crust is different from oceanic crust because it | is less dense |
| MC Plates in strike slip boundaries | grind past horizontal |
| MC Most lithospheric plates contain | oceanic and continental plate |
| MC When two Continental plates collide the form | mountains |
| MC Oceanic plate material is absorbed back into the mantle at | trenches, convergent |
| TF Trenches are found mostly far from continents | F |
| TF All plates contain oceanic plates | T |
| TF The topmost solid layer of the earth is called the hydrosphere | F |
| TF Fossils are used to support the idea that continents were pnce joined together | T |
| TF Fossils are formed oly from the remains of animal life preserved in rock | F |
| TF The midoceanic ridges form the single largest mountain chain in the world | T |
| TF Ocean floor spreading is a concept that had no connection with the theowy of continental drift | F |
| TF The lithosphere is composed of eleven major plates | F |
| TF Divergent boundaries are sites of new crustal formation | T |
| TF Lithospheric plates move at the same speed and in the same direction | F |
| C The name of the scientist who proposed the theory of continental drift is _____ | Alfred Wegner |
| C The topmost solid layer of the earth is called the _____ | Lithosphere |
| C A movement of material caused by the difference in tempatire is called a(n) _________ | Convection Currents |
| C A strike slip boundary is very similar to a _____ fault. | Lateral |
| C _____are the moving, irregularity shaped pieces of the lithosphere that fit together to form the surface of the earth. | Plates |
| C A deep crack called the _____ runs through the center of the midocean ridge. | Rift Valley |
| C Lithospheric plates are composed of both continental and _____ crustal materials. | Oceanic |
| C _____ are the preserved remains of ancient organisms. | Fossils |
| C ______boundaries are places where plates move apart. | Divergent |
| C _____ boundaries are places where plates come together. | Convergent |
Created by:
rileybond
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