The place in the Earth's orbit where Earth is farthest away from the sun.
International Date Line
an imaginary line on the surface of the earth following (approximately) the 180th meridian
Angular distance of that location south or north of the Equator. Run East and West
The numbering system used to indicate the location of meridians drawn on a globe and measuring distance east and west of the prime meridian (0°). Run North and South
Orbital point nearest the sun
The meridian, designated at 0° longitude, which passes through the Royal Observatory at Greenwich, England.
Inclination of Earth's Access
23 and a half degree from the perpendicular position
Having an indicated pole (as the distinction between positive and negative electric charges)
Universal Time Coordinated
Greenwich Mean Time. The time in that time zone encompassing the prime meridian or 0 degree longitude
Geographic Information System, A computer system that stores, organizes, analyzes, and displays geographic data.
A navigational system involving satellites and computers that can determine the latitude and longitude of a receiver on Earth by computing the time difference for signals from different satellites to reach the receiver
Map line that connects points of equal or very similar values
Shows the numerical ratio between distances on the map and Earth's surface.
Allows geographers to see land use changing over time by comparing pictures of places from years past to current photographs.
A method of collecting data or information through the use of instruments that are physically distant from the area or object of study.
Description of scale using words "one inch equal four miles"
Conformal Map Projections
A projection that maintains proper angular relationships over the entire map; over limited areas shows the correct shapes of features shown on a map.
Equivalent Map Projections
A projection that maintains constant size relationships over the entire map.
Shows the ratio between distances on a map and distances on the earth
Tropic of Cancer
23.5 degrees north
Tropic of Capricorn
23.5 degrees south
March 22 - All locations on Earth experience 12 hours of daylight - The event that the Sun be positioned directly over the Earth's equator
Circle of Illumination
The dividing line between day and night. This circle intersects the equator, which is why daylength at the equator is evenly divided.
The solid part of the earth consisting of the crust and outer mantle. Greek for Stone
The mass of air surrounding the Earth. Greek for Air
4.6 billion Years
Tilted 23.5 degrees from a line perpendicular from the plane of Earth's orbit