The Tilt Angle of Earth's Spin Axis to the Direction

question 219

Multiple Choice

The tilt angle of Earth's spin axis to the direction perpendicular to the ecliptic (known as the ecliptic pole)

• A) is 90° and fixed.
• B) varies rapidly through the year from +23.5° to -23.5°.
• C) is 23.5° and fixed.
• D) is 0° and fixed because this defines the ecliptic plane.

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Definitions:

Sense Organs

Specialized structures that detect external stimuli, allowing organisms to perceive the world around them.

Energy

The capacity to do work or to produce changes within a system, typically measured in joules or calories.

Sensation

The initial detection of stimulus energy (e.g., sound, light) by sensory organs and its conversion into neural signals.

Efferent Nervous System

Part of the nervous system responsible for carrying motor signals from the central nervous system to the body, controlling actions.