CONTINENTAL DRIFT
This person wrote "Origins of Continents and Oceans" to explain his theory of "Continental Drift".
Who is Alfred Wegener?
This technology allowed scientists to map the ocean floor.
What is sonar?
The deepest valleys on Earth's surface.
What is a deep-ocean trench?
Density is useful because we can calculate if an object will ___________ or ______________ in a given substance.
What is sink or float?
The edge of a continent that is underwater.
What is a continental shelf?
This is the name given to the huge landmass known as an ancient supercontinent.
What is Pangaea?
When two oceanic plates move apart and new crust is formed.
What is seafloor spreading?
Where one plate slides under another.
What is a subduction zone?
True or False: An object that floats in water is less dense than water.
What is true?
The oldest type of lithospheric plate.
What is oceanic?
Glossopteris, Cynognathus, Lystrosauras and Mesosaurus provided this type of evidence to support the theory.
What is fossil evidence?
New oceanic crust emerges from the mantle at this part of the seafloor.
What is a mid-ocean ridge?
The reason why oceanic crust sinks below continental crust during subduction.
What is more dense?
The density of an object with a mass of 32g and a volume of 8mL.
What is 4 g/mL?
True or False: The mass of an object is equal to its weight.
What is false?
Tropical plant fossils provided this type of evidence.
What is ancient climate evidence?
This zebra stripe-like feature provides evidence for seafloor spreading.
What is magnetic polarity reversal?
The process that creates smaller oceans.
What do subduction zones create?
The location of the densest liquid in a density column (think about the investigation with oil and alcohol in the same beaker).
What is the bottom?
The section of the ocean floor where the oldest crust sinks back into the mantle and melts back into magma.
What is a deep-ocean trench?
Scientists rejected Wegener's theory because he couldn't provide what?
What is the force that makes the continents move?
The location where oceanic crust is pushed aside on both sides.
What is a mid-ocean ridge?
The location of many volcanic mountain chains due to sinking slabs of oceanic crust.
What is run parallel to deep-ocean trenches?
What will happen to the density of an object if it is cut in half?
What is 'remain the same'?
The curved surface seen when you measure the volume of a liquid in a graduated cylinder.
What is the meniscus?