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All about Remote Sensing and GIS Flashcards | StudBud
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All about Remote Sensing and GIS
All about Remote Sensing and GIS
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1
Remote sensing involves the collection of data from:
Ground surveys only
Close-range observations only
Social media platforms
Faraway sources, such as satellites and aircraft
2
NDVI (Normalized Difference Vegetation Index) is used to:
Calculate the number of clouds in a satellite image
Analyze the health and density of vegetation
Determine the density of buildings in an urban area
Measure the temperature of water bodies
3
A map projection is used to:
Highlight political boundaries
Create artistic representations of landscapes
Display geographic features in their true shapes
Convert 3D Earth to a 2D map
4
Which image processing technique is commonly used to reduce noise and emphasize image features?
Image compression
Image enhancement
Histogram equalization
Image fusion
5
Image processing techniques can be used to:
Change physical properties of objects in the real world
Transmit data between remote sensing platforms
Enhance, analyze, and manipulate digital images
Control satellite orbits
6
The spectral signature of an object is influenced by its:
Material properties and illumination conditions
Size and shape only
Altitude above sea level
Temperature only
7
Sentinel 2 satellites primarily provide data related to:
Atmospheric temperature
Land use and land cover
Deep space phenomena
Ocean currents
8
GPS Status application on a smartphone provides information about:
Nearby restaurants
Social media updates
Traffic conditions
Global Positioning System signal strength and accuracy
9
Remote sensing involves collecting data from close-range observations only.
False
True
10
GPS Status application provides information about Global Positioning System signal strength and accuracy.
False
True
11
Map composition involves:
Arranging and presenting map elements on a layout
Mixing colors to create new map legends
Predicting future geographic trends
Converting raster data to vector data
12
Which spectral bands are commonly used to calculate NDVI?
Red and Infrared
Blue and Red
Green and Blue
Infrared and Green
13
Map projections are used to display the Earth's surface in its true 3D shape.
True
False
14
Which of the following is NOT a remote sensing platform?
Satellite
Drone
Telescope
Weather Balloon
15
Which spectral region is typically used for vegetation analysis and health assessment?
Visible
Microwave
Ultraviolet
Infrared
16
Sentinel 2 satellites have how many spectral bands?
12
3
6
20
17
The Mercator projection preserves:
All of the above
Area
Shape
Distance
18
A map legend typically explains:
The meaning of symbols and colors used on the map
The geographic coordinates of the map's center
The elevation profile of the terrain
The legend of a famous geographical event
19
The raster calculator in GIS is used to:
Generate random elevation data
Perform mathematical operations on raster datasets
Display satellite images
Calculate the total area of a raster dataset
20
What is a spectral signature in remote sensing?
Graphical representation of an object's reflectance at different wavelength
A code used to identify specific satellite sensors
A weather forecast based on satellite data
A unique autograph of a satellite image
21
What does GIS stand for?
General Information System
Geographic Information System
Global Imaging System
Geological Integration System
22
Masking in remote sensing refers to:
Creating a boundary for a specific area of interest
Applying a filter to a satellite image
Blurring sensitive information on maps
Wearing a protective covering while processing data
