network of parallels and meridians used to fix location
east-west circle on the Earth's surface, lying in a place parallel to the equator
parallel that lies midway between the two poles (latitude)
north-south line on the Earth's surface, connecting the poles (longitude)
reference meridian which has a longitude of 0 degrees
the meridians form a rectangular grid of straight vertical lines, while the parallels form straight horizontal lines
the goode projection
equal area map often used to display information such as climate or soil type (indicates the true sizes of regions on the Earth's surface)
map projection centered on either the North or South pole
time system based on the local time of a standard meridian and applied to the belts of longitude extending roughly 7.5 on either side of that meridian
International Date Line
west side of the 180th meridian; point at which it becomes a new day
the point in orbit in which Earth is closest to the sun (on or around January 3rd)
Earth is farthest from the sun (around July 4th)
plane of the ecliptic
place containing the Earth's orbit around the sun
winter (december) solstice
the subsolar point is at 23.5 degrees south--Tropic of Capricorn (southern hemisphere is tilted toward the sun)
summer (june) solstice
the subsolar point is at 23.5 degrees north--Tropic of Cancer(northern hemisphere is tilted toward the sun)
instant in time when the subsolar point falls on the Earth's equator and the circle of illumination passes through both poles
circle of illumination
circle that separates the day hemisphere from the night hemisphere
single point on Earth's surface where the sun is directly overhead at a particular moment
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