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Directions: Apply the Knowledge You Have Gained from Chapter 8

question 11

Multiple Choice

Directions: Apply the knowledge you have gained from Chapter 8 to select the best answer to the questions about the following reading passage.
Riding up the mountain trail, my thighs ached and my lungs burned, but I couldn't be happier. Fifty feet in front of me pedaled my brother, Keith, fresh off his tour with the Marines. This mountain biking adventure was his idea. The green, forest-lined trail was rugged, with sharp turns and steep descents. At one point we hit a patch of fog and I lost sight of Keith. It felt as if we were riding through clouds. The ghostly air was damp and smelled like rain. I slowed down and called for my brother, 'Are you still up there?' 'Would I be anywhere else?' he yelled back. When the fog disappeared, we stopped for a breather on a ridge that overlooked a vast valley. A sea of pointy evergreens stretched for miles, ending near the peak of a distant mountain. While I snacked on a peanut butter granola bar, Keith glanced over at me and said, 'This is fun, isn't it?' 'It's good having you back, man,' I responded. With that, we hopped on our bikes.
What is the purpose of the reading passage?

Definitions:

Divergent Plate Boundary

A boundary where tectonic plates are moving away from each other, often resulting in the creation of new crust as magma rises and solidifies.

Oceanic Crust

The part of Earth's lithosphere that underlies the ocean basins, composed primarily of basalt and gabbro.

Magnetic Reversals

A phenomenon where Earth's magnetic field changes direction, with magnetic north and south poles swapping places.

Seafloor Spreading

A process occurring at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge.