Minnesota Remote Sensing Technician
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download Pdf
1. Which electromagnetic spectrum region is most commonly used in
optical remote sensing for vegetation analysis?
A Visible light
B X-ray
C Gamma rays
D Radio waves
A Visible light
Vegetation reflects strongly in the visible and near-infrared portions
of the spectrum, making these regions essential for assessing plant
health and land cover.
2. What does spatial resolution in remote sensing refer to?
A The time between image captures
, B The smallest detectable object size on the ground
C The number of spectral bands used
D The satellite orbit altitude
B The smallest detectable object size on the ground
Spatial resolution defines the ground area represented by a single
pixel, directly affecting image detail and interpretability.
3. Which sensor type actively emits energy and measures the return
signal?
A Passive sensor
B Optical sensor
C Thermal sensor
D Radar sensor
D Radar sensor
Active sensors such as radar emit their own energy and analyze the
reflected signal, allowing data collection regardless of sunlight.
4. What is the primary purpose of atmospheric correction in satellite
imagery?
A Increase image size
B Remove atmospheric distortions
C Add spectral bands
D Improve GPS accuracy
B Remove atmospheric distortions
, Atmospheric correction reduces scattering and absorption effects to
improve the accuracy of surface reflectance values.
5. Which index is commonly used to assess vegetation health?
A NDVI
B DEM
C DSM
D LIDAR
A NDVI
The Normalized Difference Vegetation Index uses red and near-
infrared bands to estimate vegetation vigor and density.
6. What does GIS stand for?
A Geographic Information System
B Global Imaging Satellite
C Geospatial Information Sensor
D Ground Integrated System
A Geographic Information System
GIS integrates spatial and attribute data for mapping, analysis, and
decision-making.
7. Which coordinate system is most commonly used for global
positioning?
A Cartesian grid
B Geographic coordinate system
C Polar system
, D Local grid only
B Geographic coordinate system
Latitude and longitude form the geographic coordinate system used
globally for positioning.
8. What is radiometric resolution?
A Ability to detect object shape
B Number of spectral bands
C Sensitivity to energy differences
D Satellite orbit pattern
C Sensitivity to energy differences
Radiometric resolution defines how finely a sensor can detect
differences in energy intensity.
9. Which platform is commonly used for Earth observation satellites?
A Ground station
B Spaceborne satellite
C Drone only
D Submarine sensor
B Spaceborne satellite
Spaceborne satellites provide large-scale, repetitive Earth
observation data.
10. What is a pixel in remote sensing imagery?
A A satellite orbit path
B Smallest unit of an image
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download Pdf
1. Which electromagnetic spectrum region is most commonly used in
optical remote sensing for vegetation analysis?
A Visible light
B X-ray
C Gamma rays
D Radio waves
A Visible light
Vegetation reflects strongly in the visible and near-infrared portions
of the spectrum, making these regions essential for assessing plant
health and land cover.
2. What does spatial resolution in remote sensing refer to?
A The time between image captures
, B The smallest detectable object size on the ground
C The number of spectral bands used
D The satellite orbit altitude
B The smallest detectable object size on the ground
Spatial resolution defines the ground area represented by a single
pixel, directly affecting image detail and interpretability.
3. Which sensor type actively emits energy and measures the return
signal?
A Passive sensor
B Optical sensor
C Thermal sensor
D Radar sensor
D Radar sensor
Active sensors such as radar emit their own energy and analyze the
reflected signal, allowing data collection regardless of sunlight.
4. What is the primary purpose of atmospheric correction in satellite
imagery?
A Increase image size
B Remove atmospheric distortions
C Add spectral bands
D Improve GPS accuracy
B Remove atmospheric distortions
, Atmospheric correction reduces scattering and absorption effects to
improve the accuracy of surface reflectance values.
5. Which index is commonly used to assess vegetation health?
A NDVI
B DEM
C DSM
D LIDAR
A NDVI
The Normalized Difference Vegetation Index uses red and near-
infrared bands to estimate vegetation vigor and density.
6. What does GIS stand for?
A Geographic Information System
B Global Imaging Satellite
C Geospatial Information Sensor
D Ground Integrated System
A Geographic Information System
GIS integrates spatial and attribute data for mapping, analysis, and
decision-making.
7. Which coordinate system is most commonly used for global
positioning?
A Cartesian grid
B Geographic coordinate system
C Polar system
, D Local grid only
B Geographic coordinate system
Latitude and longitude form the geographic coordinate system used
globally for positioning.
8. What is radiometric resolution?
A Ability to detect object shape
B Number of spectral bands
C Sensitivity to energy differences
D Satellite orbit pattern
C Sensitivity to energy differences
Radiometric resolution defines how finely a sensor can detect
differences in energy intensity.
9. Which platform is commonly used for Earth observation satellites?
A Ground station
B Spaceborne satellite
C Drone only
D Submarine sensor
B Spaceborne satellite
Spaceborne satellites provide large-scale, repetitive Earth
observation data.
10. What is a pixel in remote sensing imagery?
A A satellite orbit path
B Smallest unit of an image
