Seasons
Celestial Sphere
Eclipses
Moon Phases
Other Stuff
100
What are the reasons for the difference in the seasons on Earth?
What is the TILT of Earth's axis and its position in its orbit around the Sun?
100
The apparent path and the Sun as seen on the Celestial Sphere.
What is the ecliptic?
100
This occurs when the moon's orbit crosses the ecliptic.
What is a solar eclipse?
100
The phase of the moon that occurs after a waxing gibbous moon.
What is a full moon?
100
The point in the moon's orbit around the Earth where it is farthest from the Earth.
What is its apogee?
200
What is the degree of Earth's axial tilt?
What is 23.5 degrees?
200
The angle that a star makes with the Celestial Equator is called this.
What is declination?
200
This is the darkest part of the eclipse shadow.
What is the UMBRA?
200
The best time to observe the waning phases of moon.
What is in the early morning?
200
Line in the distance that appears to divide the Earth with the sky from an observer's point of view.
What is the horizon?
300
What two months do Equinox's occur and where do they occur in the path of the ecliptic?
What is March & September and when the ecliptic intersects the celestial equator?
300
The right ascension of a star is measured in.
What are hours?
300
The lighter part of a shadow cast by an object.
What is the penumbra?
300
These result from the changing angle of the moon, Sun, and Earth in relation to each other.
What are the lunar phases?
300
Cancer, Gemini, and Virgo are all constellations in the ______________.
What is the zodiac?
400
The days in the year when the ecliptic is at an angle of declination with the celestial equator of + or - 23.5 degrees.
What are the solstices?
400
The highest point on the Celestial Sphere directly above and observer.
What is the zenith?
400
This occurs when Earth is located between the Sun and Moon, such that Earth blocks the Sun's light from directly striking the Moon.
What is a LUNAR ECLIPSE?
400
The meaning of the term "waning".
What is decreasing in size or other characteristic?
400
The term for the period of time it takes for the Earth to revolve around the Sun.
What is its sidereal period or orbital period?
500
On what date does the Sun shine directly overhead over the Tropic of Cancer? (Northern Hemisphere)
What is June 21 (summer solstice)?
500
Groupings of stars in the night sky that have taken on mythological or natural names.
What are constellations?
500
When the moon is near apogee and the Earth is near perihelion, this type of solar eclipse occurs (ring of fire).
What is an annular solar eclipse?
500
The moon phase that occurs after a new moon.
What is a waxing crescent moon?
500
The movement of a body in an orbit around another larger body.
What is revolving or revolution?
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