Problem 1
What type of reasoning did Wegener use in developing his continental drift theory? Explain your reasoning. a) Inductive b) Deductive c) Both
Problem 2
Which of these lines of evidence were used to support Wegener's continental drift theory? (Select all that apply.) a) The distribution of fossils b) Fit of the continents c) Match of mountain belts d) Earthquake locations e) Paleoclimate data
Problem 6
Regarding the relationship between age and the character of the ocean floor, which statement(s) is (are) true? a) Deeper regions of the ocean floor tend to be younger. b) The Pacific Ocean is larger than the Atlantic Ocean because it contains older oceanic floor. c) The oldest oceanic crust is present only near trenches. d) The youngest oceanic crust is near the ridges.
Problem 8
Explain how the following patterns can be interpreted to contradict the contracting Earth model: (1) topography of the ocean floor, (2) age of the ocean floor, (3) heat flow, (4) volcanic activity, and (5) earthquake activity in the ocean floor.
Problem 12
Which magnetic property was more important in providing support for the seafloor spreading theory? Explain the reasoning behind your answer. a) Magnetic inclination; the inclination of Earth's magnetic field varies with location. b) Magnetic polarity; the north and south magnetic poles have switched positions throughout Earth's history.
Problem 15
Imagine that you were able to take a knife and slice through North America from the Atlantic Ocean to the Pacific Ocean. Draw and label a sketch illustrating the locations and positions of the lithosphere, asthenosphere, crust and mantle.
