Celestial Sphere Exploration
A Grade 12 science worksheet exploring the celestial sphere, its components, and coordinate systems.
Includes
Standards
Celestial Sphere Exploration
Name:
Date:
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Read each question carefully and answer to the best of your ability. Show all work where applicable.
1. Which of the following best describes the celestial sphere?
A physical sphere surrounding Earth where stars are embedded.
An imaginary sphere concentric with Earth, on which all celestial bodies appear to be located.
The Earth's atmosphere extending into space.
The region of space where the solar system resides.
2. The celestial equator is directly above the Earth's equator. What is its inclination relative to the ecliptic?
0 degrees
23.5 degrees
45 degrees
90 degrees
3. The apparent path of the Sun across the celestial sphere over a year is called the .
4. The two points where the celestial equator intersects the ecliptic are known as the and .
5. Explain the difference between altitude-azimuth coordinates and equatorial coordinates.
6. Describe how the celestial sphere appears to an observer at the North Pole.
7. All stars on the celestial sphere appear to move from east to west due to Earth's rotation.
True
False
8. The zenith is the point directly above an observer on the celestial sphere.
True
False