Key Concepts

Question 1

Geographic Coordinate System

Answer 1

Uses latitude and longitude.

Question 2

Projected Coordinate System

Answer 2

Flattens the Earth’s surface onto a 2D plane.

Question 3

Geocoding

Answer 3

Process of converting addresses to geographic coordinates.

Question 4

Overlay

Answer 4

Combines multiple layers of data.

Question 5

Remote Sensing

Answer 5

Collection of data about the Earth’s surface from satellites or aircraft.

Question 6

Geoenrichment

Answer 6

Aggregates demographic data and local facts for locations around the world. Provides insight about the people and places near a location by adding demographic variables and local information to existing geographic data.

Question 7

Points

Answer 7

Single locations (e.g., trees, fire hydrants)

Question 8

Lines

Answer 8

Linear features (e.g., roads, rivers)

Question 9

Polygons

Answer 9

Enclosed areas (e.g., lakes, property boundaries)

Question 10

Attribute Data

Answer 10

Provides additional information about geographic features. Typically stored in tables and linked to spatial features