All Flashcards
What is a reference map?
A map showing locations of places and geographic features.
What is a thematic map?
A map that tells a story about a place by showing the distribution of a particular phenomenon.
What is map scale?
The relationship between distance on a map and the corresponding distance on the ground.
What is large scale map?
Shows a small area with great detail.
What is small scale map?
Shows a large area with less detail.
What is geometric data?
Describes the shape and size of features (points, lines, polygons).
What is topographic data?
Shows elevation and landforms.
What is attribute data?
Describes the characteristics of features (e.g., population, income).
What is network data?
Shows connections between features (e.g., roads, pipelines).
What is temporal data?
Shows how things change over time.
What is GPS?
Global Positioning System; uses satellites to pinpoint your exact location on Earth.
What is GIS?
Geographic Information System; a tool for managing, analyzing, and visualizing spatial data.
What are DEMs?
Digital Elevation Models; show the shape of the Earth's surface.
What are the steps of how GPS works?
Satellites send signals, receivers get signals, trilateration calculates position, location is displayed.
What are the steps of how GIS works?
Data Input, Data Storage, Data Analysis, Data Output.
What are the causes and effects of map projection distortion?
Cause: Projecting a 3D sphere onto a 2D surface. Effect: Distortion of shape, area, distance, or direction.
What are the causes and effects of using census data?
Cause: Need for population characteristics. Effects: Informing policy decisions, allocating resources, planning for the future.