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WorksheetsChapter 9: Plate Tectonics and Ocean Floor
Total questions: 20
Worksheet time: 10mins
Alfred Wegener is best known for what?
plate tectonics
sea floor spreading
continental drift
subduction
what is the name given by Wegener to the supercontinent he proposed existed before the current continents?
euroamerica
pangaea
atlantis
panamerica
support for Harry Hess's hypothesis of sea-floor spreading did NOT include
magnetic strips in the ocean floor rock
granitic rock in ocean floor
earthquake patterns in subduction zones
the age of the ocean floor rock
most of earth's earthquakes, volcanoes, and mountain building occur
in the center of continents
himalayas
plate boundaries
volcanic island arcs
what was the supercontinent called?
continental oceanic system
oceanic rift complex
Pangaea
plate theory
what did pangaea mean?
pan means almost everything and gaea means oceans
pan means everything in the universe and gaea means earth
pan means something you cook in and gaea means the food that is abundant from earth
pan means entire and gaea means earth
the main objection to Wegener's hypothesis was that he could not describe a mechanism
that could move water
could shift continental plates
could turn the tide against the current
that could predict earthquakes and other catastrophic events
what was the name of the book Wegener published?
the origin of plate tectonics and oceanic crusts 1916
the origin of continents and oceans 1915
the origin of oceans and continents 1917
the origin of earths systems and ocean floor 1915
how much of the ocean floor has been discovered
less than 3 perecent
less than 5 percent
less than 2 percent
25 percent
where scientist thought the water was really deep, it proved to be large undersea ____________
holes
sand pits
mountains
volcanoes
what new technology made it easier to map the ocean floor?
Underwater LED lights
Scuba Gear
Faster engines and drones
Sonar technology
what is the deepest trench in the ocean?
the mary-mahoneys trench
the mariatta trench
the Mariana Trench
the maple trench
who was the guy who came up with the idea that sea-florr spreading would tell us how the ocean was formed?
Alfred Wegener
Harry Hess
democritus
john wick
our earth is getting bigger every year.
true
false
are found where two Earth's plates move apart
convergent
divergent
transform
Option 3
forms where two plates move together.
convergent
divergent
transform
where two plates grind past each other
convergent
divergent
transform
what is it when new land forms over another which is produced by small chain volcanic islands on top of one another.
arc islands
volcanic shells
oceanic volcanoes
volcanic island arc
ridge push- are rising columns of hot mantle rock
true
false
convection currents in the mantle provide the basic driving forces for plate motions
true
false
