Download Types of Plate Boundaries Ridge Push and Slab Pull

Types of Plate Boundaries
Ridge Push and Slab Pull
1)
Identify (name) the type of plate boundary that causes
rifts in Earth’s surface.
2)
Describe what happens when oceanic and continental
lithosphere collide. (HINT: describe what happens to each
piece of lithosphere and name any topographic features
created.)
3)
Describe the relative motion depicted in the diagram of a
transform boundary.
4)
Sometimes plates at transform boundaries slide past each
other relatively smoothly. At other times they stick, and
tension builds up along the fault. Identify which condition
would most likely produce the severe earthquake. Explain
your answer.
5)
Earth’s lithosphere is constantly being created and
destroyed. Identify which diagrams show these two
complementary processes at work. Explain your answer.
6)
Study the “ridge push” diagram. Identify which is
denser—newly formed lithosphere or older lithosphere.
Explain your answer. Explain your answer.
7)
Describe the direction ridge push moves lithosphere
relative to the mid-ocean ridge.
8)
Study the “slab pull” diagram. Identify which of the two
plates shown (the plate on the left or the plate on the
right) contains the densest lithosphere. Explain your
answer.
9)
The edge of the subducting plate pulls the rest of the
plate behind it down into the asthenosphere. Identify the
characteristic (property) of the subducting lithosphere
that causes this slab pull.
10) Explain how mantle convection causes plate motions such
as ridge push and slab pull.