Podcast
Questions and Answers
What is the primary purpose of a coordinate system?
What is the primary purpose of a coordinate system?
- To measure the elevation of a location
- To determine the distance between two reference points
- To establish positions with respect to given reference points (correct)
- To create a virtual map
What is the science, art, and profession of determining the positions on the earth's surface?
What is the science, art, and profession of determining the positions on the earth's surface?
- Cartography
- Geography
- Navigation
- Land surveying (correct)
What is a mental map?
What is a mental map?
- A map data stored in a database
- A physical map printed on paper
- A digital map stored on a computer
- An image in our minds (correct)
What is a neat line on a real map?
What is a neat line on a real map?
What is the main difference between a real map and a virtual map?
What is the main difference between a real map and a virtual map?
What is necessary for satellite signals to reach GPS receivers?
What is necessary for satellite signals to reach GPS receivers?
How many satellites are needed to calculate a 3D position?
How many satellites are needed to calculate a 3D position?
What is the purpose of a scale on a map?
What is the purpose of a scale on a map?
What does PDOP stand for?
What does PDOP stand for?
What type of map shows the shape and elevation of terrain?
What type of map shows the shape and elevation of terrain?
What does HDOP measure?
What does HDOP measure?
What is the maximum DOP value at which data should be collected?
What is the maximum DOP value at which data should be collected?
What is the name of the line that joins the poles and specifies location in east-west direction?
What is the name of the line that joins the poles and specifies location in east-west direction?
What is the purpose of an inset on a map?
What is the purpose of an inset on a map?
What is considered an excellent DOP value?
What is considered an excellent DOP value?
What type of map is used to show specialized information in conjunction with a basemap?
What type of map is used to show specialized information in conjunction with a basemap?
What is the name of the circle on the surface of the globe that divides the Earth into two equal halves?
What is the name of the circle on the surface of the globe that divides the Earth into two equal halves?
What is the purpose of a graticule on a map?
What is the purpose of a graticule on a map?
What is the most accurate shape of the Earth?
What is the most accurate shape of the Earth?
What type of map is used to show statistical information in diagrammatic form?
What type of map is used to show statistical information in diagrammatic form?
What is the purpose of longitude and latitude on a map?
What is the purpose of longitude and latitude on a map?
What is the term for the study of the shapes and features of the earth's surface?
What is the term for the study of the shapes and features of the earth's surface?
Height above sea level would pertain to what term?
Height above sea level would pertain to what term?
What is the purpose of a benchmark?
What is the purpose of a benchmark?
What is the term for the lines on a map that connect regions of equal elevation?
What is the term for the lines on a map that connect regions of equal elevation?
What map scale is the ratio of the distances measured on a map to the distances on the earth?
What map scale is the ratio of the distances measured on a map to the distances on the earth?
What is the formula to calculate the percent slope of a surface?
What is the formula to calculate the percent slope of a surface?
What is the term for the systematic rendering of a graticule of lines of latitude and longitude on a flat surface?
What is the term for the systematic rendering of a graticule of lines of latitude and longitude on a flat surface?
What is the main purpose of a datum in GIS?
What is the main purpose of a datum in GIS?
What is the term for the network of satellites orbiting the earth that provides accurate location and timing information?
What is the term for the network of satellites orbiting the earth that provides accurate location and timing information?
What is the purpose of an ephemeris in GPS?
What is the purpose of an ephemeris in GPS?
A relative coordinate system defines locations by their distance from a reference point.
A relative coordinate system defines locations by their distance from a reference point.
A position is an informal way to describe a location.
A position is an informal way to describe a location.
Land surveying is the science of determining the positions on the earth’s surface and measuring distances, directions, angles, and elevations between them.
Land surveying is the science of determining the positions on the earth’s surface and measuring distances, directions, angles, and elevations between them.
A virtual map is a tangible map product that has a permanent form and can be directly viewed.
A virtual map is a tangible map product that has a permanent form and can be directly viewed.
A typographical information is a component of a real map that includes the title, names, legends, and notes printed on the map.
A typographical information is a component of a real map that includes the title, names, legends, and notes printed on the map.
A choropleth map is a type of thematic map that represents values that occur on a surface by a series of lines that join points of equal value.
A choropleth map is a type of thematic map that represents values that occur on a surface by a series of lines that join points of equal value.
A cartogram is a map that shows the shape and elevation of terrain.
A cartogram is a map that shows the shape and elevation of terrain.
The graticule is a grid pattern of meridians and parallels that assumes a flat Earth.
The graticule is a grid pattern of meridians and parallels that assumes a flat Earth.
The equator is an example of a parallel.
The equator is an example of a parallel.
A planimetric map is a type of map that shows the shape and elevation of terrain.
A planimetric map is a type of map that shows the shape and elevation of terrain.
A bathymetric map is a type of thematic map that shows water depths and underwater topography.
A bathymetric map is a type of thematic map that shows water depths and underwater topography.
Latitude measures location in an east-west direction.
Latitude measures location in an east-west direction.
A flow map is a type of thematic map that uses quantitative linear symbols to represent connections or flows between locations on the earth's surface.
A flow map is a type of thematic map that uses quantitative linear symbols to represent connections or flows between locations on the earth's surface.
A geoid is a perfect sphere shape that represents the Earth's surface.
A geoid is a perfect sphere shape that represents the Earth's surface.
A benchmark is a point that has been accurately measured for its position and elevation.
A benchmark is a point that has been accurately measured for its position and elevation.
A graphic scale is a text version of the map scale.
A graphic scale is a text version of the map scale.
The Lambert Conformal Conic Projection is used for small-scale topographic maps.
The Lambert Conformal Conic Projection is used for small-scale topographic maps.
A datum is a coordinate system that uses a reference surface, like sea level, to provide known locations for maps and surveys.
A datum is a coordinate system that uses a reference surface, like sea level, to provide known locations for maps and surveys.
GPS satellites use solar clocks for time determination.
GPS satellites use solar clocks for time determination.
The Universal Transverse Mercator (UTM) uses latitude and longitude for navigation.
The Universal Transverse Mercator (UTM) uses latitude and longitude for navigation.
A contour line is a line on a map that connects regions of different elevation.
A contour line is a line on a map that connects regions of different elevation.
Map projections attempt to retain all characteristics of the globe.
Map projections attempt to retain all characteristics of the globe.
The Mercator projection is used for navigation because it provides a line of constant direction.
The Mercator projection is used for navigation because it provides a line of constant direction.
GPS signals can penetrate thick tree canopy.
GPS signals can penetrate thick tree canopy.
Five satellites are needed to calculate a 3D position.
Five satellites are needed to calculate a 3D position.
A DOP value of 1 is considered poor.
A DOP value of 1 is considered poor.
VDOP measures the accuracy of a GPS reading in the horizontal plane.
VDOP measures the accuracy of a GPS reading in the horizontal plane.
Data should be collected above a DOP of 5.
Data should be collected above a DOP of 5.
Satellite signals require a direct line of sight to GPS receivers.
Satellite signals require a direct line of sight to GPS receivers.
What obstacle can block GPS signals?
What obstacle can block GPS signals?
What is the minimum number of satellites required to calculate a 3D position?
What is the minimum number of satellites required to calculate a 3D position?
What does PDOP stand for?
What does PDOP stand for?
What is the range of DOP values?
What is the range of DOP values?
What is the recommended maximum DOP value for collecting data?
What is the recommended maximum DOP value for collecting data?
What does VDOP measure?
What does VDOP measure?
What is the purpose of trilateration in GPS?
What is the purpose of trilateration in GPS?
What is an excellent DOP value?
What is an excellent DOP value?
