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Our Planet:
Our Planet is very special
We have a rare and unique area in our solar system
Our placement distance from the sun effects many things that allow for life on earth
Our Planet Continued:
One thing that is also unique about Earth is its axis
Earth’s axis makes it have a specific tilt
This tilt effects the Earth in many ways, and creates many interesting celestial events
Solstices: A Name
One of these celestial events—solstices
The word “solstice” is derived from the Latin “sol”=sun and “sistere”=to stand still
Thus the word “solstice” means “sun that stands still”
Solstice: Causes
One cause of planetary solstice is the Earth’s distance from the sun
Another is the tilt of the axis During a solstice the sun travels to its
apex in the sky, then back down—rather then in one motion
These apexes are both at the sun’s southernmost and northernmost extremes
Solstice: Results
• One of the results for solstices are the apparent “standing still” of the sun for a time
•Another result is, in some cultures, the solstices serve as markers for the season—in other cultures this falls in the middle of the seasons
Equinox: A Name
One of these celestial events—equinoxes
The word “equinox” is derived from the Latin “aequus”=equal and “nox”=night
Thus the word “equinox” means “an equal night”
Equinox: Causes
The tilt of the Earth’s axis is just right, that when the sun hits the angle, it appears and is in perfect division
This is because the sun in shining on the axis point right above it
Equinox: Results
The results of equinoxes is that there are equal nights on two sides of the equator
Summary The tilt of the Earth effects many things
One of the things that it effects is the apparent apex of the sun in the sky—solstices
Another thing that it effects is the apparent “standing still” of the sun during equinoxes
Both these celestial occurrences have reasons for their cause and they both have results
In concert, these ideas help to give us a deeper understanding of the complexity and uniqueness of our world
Summary Quiz
Question #1 Question #2 Question #3 Question #4 Question #5 Question #6 Question #7 Question #8
References
Question #1:
What are two times per year when solstices happen?
Mid-Late June
And
Mid-Late December
Source?
Question #2:
What causes equinoxes?
Source?
The tilt, and the apparent shadow of the as it seems to be in perfect division
AND
The sun is shining above the axis
Equinox: Causes
The tilt of the Earth’s axis is just right, that when the sun hits the angle, it appears and is in perfect division
This is because the sun in shining on the axis point right above it
Quiz Home
Question #3:
What does the word “solstice” mean? Sol=Sun
Sistene=to stand still“sun that stands still”
Source?
Solstices: A Name
One of these celestial events—solstices
The word “solstice” is derived from the Latin “sol”=sun and “sistere”=to stand still
Thus the word “solstice” means “sun that stands still” Quiz Home
Question #4:
What are two times per when equinoxes happen?
Source?
Mid-Late March
And
Mid-Late September
Question #5:
What are two results of solstices?
Source?
1. Apparent “Standing Still” of sun
2. Cultural Marker of Seasons/Times of Year
Solstice: Results
• One of the results for solstices are the apparent “standing still” of the sun for a time
•Another result is, in some cultures, the solstices serve as markers for the season—in other cultures this falls in the middle of the seasons
Quiz Home
Equinox: A Name
One of these celestial events—equinoxes
The word “equinox” is derived from the Latin “aequus”=equal and “nox”=night
Thus the word “equinox” means “an equal night”
Quiz Home
Question #7:
What causes solstices?
Source?
1. Distance from sun
2. Tilt of axis3. Travel of apex
in non-circular
4. Southernmost and Northernmost Extremes
Solstice: Causes
One cause of planetary solstice is the Earth’s distance from the sun
Another is the tilt of the axis During a solstice the sun travels to its
apex in the sky, then back down—rather then in one motion
These apexes are both at the sun’s southernmost and northernmost extremes Quiz Home
Equinox: Results
The results of equinoxes is that there are equal nights on two sides of the equator
Quiz Home
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