If You Point Toward the Zenith Right Now and Then

question 12

Multiple Choice

If you point toward the zenith right now and then point there again 6 hours later, you will have pointed twice in the same direction relative to

• A)your horizon.
• B)the Sun.
• C)the Moon.
• D)the fixed stars.

---

Definitions:

Motor Control

The process by which humans and animals use their brain and nervous system to activate and coordinate the muscles and limbs involved in the performance of a movement.

Tourette Syndrome

Disorder of the motor system, characterized by involuntary vocalizations (sometimes including curse words and grunting sounds) and odd, involuntary movements of the body, especially of the face and head.

Parkinson Disease

A progressive neurological disorder characterized by motor symptoms such as tremor, rigidity, and bradykinesia, as well as non-motor symptoms, due to loss of dopamine-producing cells in the brain.

Hyperkinetic

Refers to movements that are excessive and beyond normal voluntary control, often seen in certain neurological conditions.