Plate Tectonics

Question 1

1) One of the pieces of evidence used to substantiate the Continental Drift Hypothesis is the
“Continental Jigsaw Puzzle”. That is, if you take the boundaries of each continent and try to fit
them together, you’d get a landmass that is similar to that supercontinent called ___________.
a) galaia
b) pangaea

Answer 1

B. Pangaea is the supercontinent hypothesized by Alfred Wegener to be the origin of
all landmasses of the Earth.

Question 2

2) Two plates move apart relative to each other. What type of plate boundaries were formed?
a) constructive margins
b) destructive margins

Answer 2

A. Constructive Margins, also known as Divergent Plate Boundaries, are formed
when two plates move apart relative to each other.

Question 3

3) Suppose that two oceanic plates collide, which of the following is most likely to happen?
a) the younger and less dense plate subducts
b) the older and denser plate subducts

Answer 3

B. When two oceanic plates collide, the older and denser plate subducts

Question 4

4) If divergent boundaries occur within a continent, it generates an elongated depression known
as ______________.
a) continental rift
b) subduction zone

Answer 4

A. continental rift is generated when divergent boundaries occur within a continent.

Question 5

5) Which of the following describes what a fracture zone is?
a) accumulated sediments and rocks along a margin forming mountain belts
b) linear breaks on the ocean floor that run perpendicular to oceanic ridges

Answer 5

B. A fracture zone is a linear break on the ocean floor that runs perpendicular to
oceanic ridges.