GIS Flashcards
WHAT IS GIS?
Data layering of maps with different geographical information to make something clear
What is remote sensing?
Acquiring information about an object without physical on site observation using satellite remote location
Name And Explain 2 Types Of Remote Sensing
Active Remote sensing-sending of light and is reflected back
Example; Police radar that zaps your car and sends back info about speed
Passive Remote Sensing-Makes use of the suns light
Satellite Airplane Drone
What is Resolution?
Detail which satellite images showing locations & shape of geographic features
Name and Explain The 3 Types Of Resolutions
Spatial(Space Usage)(KES google Earth/Astro/Field
-Level of detail of the data
Spectral
-Determines the size of pixels for clarity
Temporal
-Time difference between satellite images covering the same area(monitors changes in land use)
What is Attribute Data
Gives more information about how the land is used
-The name of the school @44 St. Patrick’s
-‘‘Hockey Astro’’ or ‘‘Perennial River’’
Scale-Anything you add on a map is an attribute
What is spatial Data
Data stored, managed & shared in diff formats
Provides location for data
How land is used
Critically Explain Rasta Data
The quality of an image
- Pixels
- Quality of image
- '’You see a Rasta & want to take a picture ‘’
Explain The Types of Vector Data
- Points eg. Spot heights
- Lines eg. Roads
- Polygons eg. Dam
Explain the relevance of using vector data on a map?
It is easy to use and understand because of its key
It is uniform
Discuss Data Standardization
All information is shared and used in the same way
Briefly discuss what buffering is
The marking of an area so that you can focus on it and analyze it
Helps assess natural disasters, future business locations etc.
