The following is from a passage about continental drift and plate tectonics from Science World.

This image shows the three main types of plate boundaries: divergent, convergent, and transform. Image adapted from the U.S. Geological Survey.

6. As used in line 64, "compatible" most nearly means

A. consistent.

B. adaptable.

C. opposed.

D. skewed.

7. What is the most likely reason the author mentions Iceland?

A. To offer an example of an island created at a mid-ocean ridge

B. To show a contrast between an island and a continent

C. To prove that an island can also be a volcano

D. To assert that the Mid-Atlantic Ridge connects two plates

8. Which choice provides the best evidence for the answer to the previous question?

A. Lines 9-12 ("Plates…other")

B. Lines 41-44 ("Scientists…Earth")

C. Lines 49-52 ("Most…center")

D. Lines 69-72 ("As…islands")

9. The principal rhetorical purpose of the phrase "Some geologists…separate" (lines 80-84) is to

A. suggest that scientists are still investigating plate tectonic theory.

B. emphasize the lack of data supporting how fractures separate.

C. reveal that some scientists disagree with the major tenets of plate tectonics.

D. expose a weakness in the continental-drift theory.

10. It can be reasonably inferred from information in the passage and the diagram that

A. continental rift zones always occur beside the ocean.

B. hot spots are molten plumes that travel through the lithosphere to the surface.

C. mid-ocean ridges are caused by the presence of subducting plates.

D. oceanic crust is more rigid than continental crust.