Geography
This line of latitude marks the northernmost point where the Sun can appear directly overhead.
What is the Tropic of Cancer?
This type of data represents features using points, lines, and polygons.
What is vector data?
This data model represents the Earth's surface as a grid of equally spaced cells or pixels.
What is raster data?
This process aligns data to a known coordinate system so it can be viewed and analyzed with other spatial data.
What is georeferencing?
This U.S. satellite system provides global positioning and navigation data.
What is GPS (Global Positioning System)?
This African country completely surrounds the nation of Lesotho.
What is South Africa?
This map shows elevations and terrain features.
What is a topographic map?
This mathematical process converts the 3D surface of the Earth into a 2D map.
What is map projection?
This coordinate reference system, used by GPS, is based on an ellipsoid commonly known as WGS 84.
What is the World Geodetic System 1984?
This space agency operates the Sentinel satellites as part of its Copernicus Earth observation program.
What is the European Space Agency (ESA)?
This mountain range forms a natural border between Europe and Asia.
What are the Ural Mountains?
This is the most common method of data creation in GIS.
What is digitization?
This line, at approximately 180 degrees longitude, is used to determine where each new day officially begins.
What is the International Date Line?
This open-source software, often compared to ArcGIS, is widely used for spatial analysis and map creation.
What is QGIS (Quantum GIS)?
This instrument aboard Landsat satellites measures reflected light in multiple spectral bands.
What is a multispectral scanner?
This Asian river, known as the "Yellow River," is considered the cradle of Chinese civilization.
What is the Huang He?
ESRI, but not as an acronym.
What is Environmental Systems Research Institute?
This equal-area projection, developed by a German cartographer in 1772, is often used for thematic world maps.
What is the Mollweide projection?
This raster analysis technique measures how connected cells are based on their values, often used in landscape ecology and cost-distance modeling.
What is connectivity or least-cost path analysis?
This term describes the width of the ground area that a satellite sensor observes in one pass.
What is swath width?
This remote island chain, located halfway between South America and Africa, is considered the most isolated inhabited archipelago in the world.
What is Tristan da Cunha?
Well, well, well. This man did not "know nothing," he created the famous Cholera Map in 1854.
Who is John Snow?
This cylindrical projection, created by a Flemish geographer in 1569, represents sailing courses of constant bearing as straight lines.
What is the Mercator projection?
This term describes the slight wobble in Earth's axis over roughly 26,000 years, affecting star positions and celestial coordinate systems.
What is axial precession?
This type of orbit keeps a satellite above the same point on Earth's surface, matching Earth's rotation period.
What is geostationary orbit?