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# Unit 1 Challenge:

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## natalia haworth

on 8 April 2015

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#### Transcript of Unit 1 Challenge:

Claim 1-YES
"I believe that this opening (at just over 79) is designed to mark a day of celebration in April, before the planting season began."
Claim 2-NO
"I think the opening directly over the center of the floor marks the days of the year when the sun is directly overhead at transit."
Claim 3-YES
"I believe that the pillars are meant to point toward the location of sunrise on the equinoxes and solstices."
Claim 5-NO
"The center stone is a North Star pointer!"
Unit 1 Challenge:
Investigating the Archeologist Claims

Claim 1-Explanation
The sun reaches an altitude of just over 79 and an azimuth of about 180 at transit on April 13, 400 AD.
The time of year affects how high in the sky the sun gets at transit because the earth is tilted differently throughout the seasons. In the summer we are tilted towards the sun and in the winter we are tilted away.
Claim 2-Explanation
The sun was closest to being directly overhead at transit on May 17 & July 21.
Location on Earth affects whether or not the sun ever gets directly overhead at transit because if the sun is hitting anywhere near the equator is has more of a chance of hitting zenith at transit.
Claim 3-Explanation
The pillars can be pointed to the locations of sunrise on the equinoxes and solstices because the degrees between pillars and sunrises line up.
The difference between the azimuth of the winter solstice and the equinox is 26 degrees. The difference between the azimuth of the summer solstice and the equinox is 25 degrees. This is proof because the 2 angles from the pillars are 26 & 25.
Claim 4-YES
"I have discovered that this marker (at 107 azimuth) aligns to the (very bright) star (as it rises)..."
Claim 4-Explanation
The very bright star near the constellation of Orion that rises at 107 azimuth is named Sirius. Sirius rises in the dark November through December and rises during the night for only part of the year because it all depends on our location on earth, during its orbit. In November Sirius would rise around 10:30PM but as time went on it began rising a lot earlier and ended up rising at 8:30PM in December.
Claim 5-Explanation
0 azimuth and 21 altitude are the correct positions of the North star.
The star named Polaris is located at 355 azimuth and -8 altitude.
A polestar is another term for Polaris.
Claim 6-YES
"If the turtle is really Orion, I may represent a planet that was near Orion on the night the battle ended."
Claim 6-Explanation
Saturn and Mars were near Orion on March 445 AD. This is true because the carving is said to be Orion and if the other carving is a planet it would be around this time that the major battle ended. There were planets near Orion in 445 AD but not in 446 AD.
Claim 7-NO
"I believe that the circle crossed by a bar, near Draco's head in the carving, represents a planet."
Claim 7-Explanation
Mars and Venus are most likely the planets seen by Draco's head in the carving.
Claim 8-YES
"The carving may represent the path of the planet Mars through the stars."
Claim 8-Evidence
In the carving there is a "looped snake" motion and that is what we now call Retrograde motion. The carving is the path of Mars and when the Earth passes Mars on its orbit, it looks like it is going backwards or in a loop.
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