When Computing a Hillshade, "Altitude" Refers To

question 15

Multiple Choice

When computing a hillshade, "altitude" refers to:

• A) The position of the light source measured between 0 degrees and 90 degrees
• B) The height of the light source above the terrain
• C) The position of the light source measured in 0 degrees to 360 degrees in relation to the DEM
• D) The direction the shadows generated from the light source, measured between 0 degrees and 360 degrees

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Definitions:

Myelin

A fatty substance that surrounds and insulates the axons of many neurons, enhancing the speed of electrical impulses.

Pudendal Nerve

A nerve in the pelvic region that carries sensory and motor information to and from the genitalia and surrounding areas.

Spinal Nerves

Nerves that branch out from the spinal cord, transmitting motor, sensory, and autonomic messages between the body and the spinal cord.

Cranial Nerves

Twelve pairs of nerves that emerge directly from the brain, not the spinal cord, serving head and neck functions.