Science Test Chapter 1

  1. Mid Ocean Ridge
    the longest chain of mountains in the world
  2. Sonar
    a device that bounces sound waves off underwater objects and then records the echoes of these sound waves
  3. Sea Floor Spreading
    is the process that continually adds new material to the ocean floor
  4. Deep Ocean Trenches
    deep water canyons
  5. Subduction
    the process by which the ocean floor sinks beneath deep ocean trench and back into the mantle
  6. Plate
    the litoshpere is broken into seperate sections
  7. Scientific Therory
    well tested concept that explains a wide range of obsevations
  8. Plate Tectonics
    geological therory that states that pieces of Earths lithosphere are in constant slow motion
  9. Fault
    breaks in Earth's crust where rocks have slipped past each other
  10. Transform boundary
    a place where two plates slip past each other moving in opposite directions
  11. Divergent Boundary
    place where two plates move apart
  12. Rift Valley
    deep valley forms along the divergent boundary
  13. Convergent Boundary
    the place where two plates come together
  14. Geologists
    Are scientists who study the forces that make and shape planet Earth.
  15. Rock
    the material that forms Earth's surface
  16. Geologists study what???
    They study the physical and chemical charecteristics of rock and they also study the processes that create Earth's features and search for clues about Earth's history
  17. Geology
    the study of planet Earth and began in the late 1700s
  18. What are the 2 forces that change Earth's surface?
    Constructive force and destructive force
  19. Construtive Force
    Shape the surface by buliding up mountains and landmasses
  20. Destructive Forces
    those that slowly wear away mountains and eventually everyother feature on the surface
  21. Continents
    seven great landmasses made up of layers of rock and surrounded by oceans
  22. Seismic waves
    an indirect method used to study Earth's interior
  23. How many layers are in the Earth's interior and what are they called?
    There are 3 main layers called the crust, mantle, and the core
  24. Crust
    Layer of rock forming Earth's outer skin. Icludes both dry land and ocean floor. Ocean Crust mad of Basalt and Continental Crust is made of Granite
  25. Basalt
    dark, dense rock with fine texture (oceanic crust) thickest under montains
  26. Granite
    a lighter less denserock that has larger crystals than basalt
  27. Mantle
    a layer of solid, hot, rock benath the crust. Th mantle is made of 2 parts called the Lithosphere and the Athenopshere
  28. Lithosphere
    The crust and upper rigid layer
  29. Asthenosphere
    The soft layer underneath the litoshpere
  30. Core
    Consists of a liquid outer core and a solid inner core the core is made of the metals iron and nickel
  31. How does the solid inner core create the Earth's magnetic field?
    The currents in the liquid outer core force the solid inner core to spin at a slightly faster rate than the rest of the planet creating the magnetic field
  32. Pressure
    the force pushing on a surface or area
  33. Heat Transfer
    the movment of energy from a warmer obect to a cooler object
  34. Radiation
    transfer of energy through an empty space
  35. Convection
    heat transfer by movement of heated fluid
  36. Density
    a measure of how much mass there is in a volume of a substence
  37. Convection Currents
    the flow thar transfers heat within fluid
  38. Pangea
    meaning all lands
  39. Continental Drift
    the continents slowly moved over Eath's surface
  40. Fossil
    any trace of an ancient organism that has been preservered in rock
  41. How fast does the continents move per year
    The continents move 1 to 10 centimenters per year
  42. What happens when the different crust collide??
    • When the oceanic crust and the continetal crust collide the oceanic crust sinks beneath the surface beacuse the oceanic crust is more dense
    • when the oceanic and oceanic collide the more dense one dives under the other plate
    • when two plates of continetal collide they usually crash together because they arent tht dense
  43. Who is Alfred Wegner
    Alfred is the man who thought of the super continent called Pangea and the therory of continental drift he studyed fossils and landforms to find out the information to have his plan rejected because he didnt have enough info about the force that moves the continents
  44. Where does Sea Floor Spreading occur??
    It occurs in Trenches in the oceanic crust
Card Set
Science Test Chapter 1