Remote Sensing MCQs December 26, 2025August 13, 2024 by u930973931_answers 40 min Score: 0 Attempted: 0/40 Subscribe 1. What is remote sensing? (A) The study of atmospheric pressure (B) The acquisition of information about an object or phenomenon without making physical contact (C) The measurement of soil moisture directly (D) The observation of celestial bodies 2. Which of the following is a common remote sensing platform? (A) Ground-based sensors (B) Handheld cameras (C) Surveying rods (D) Satellites 3. What type of data is typically collected by remote sensing satellites? (A) Electromagnetic radiation (B) Atmospheric pressure (C) Soil temperature (D) Wind speed 4. Which remote sensing technique is used to measure the height of objects on Earthâs surface? (A) Hyperspectral imaging (B) Spectroscopy (C) Radar (D) Lidar (Light Detection and Ranging) 5. What is the primary purpose of the Landsat satellite program? (A) Oceanographic studies (B) Weather forecasting (C) Earth observation and land surface monitoring (D) Space exploration 6. Which wavelength of electromagnetic radiation is used for vegetation monitoring in remote sensing? (A) Radio waves (B) Near-infrared (C) X-rays (D) Ultraviolet 7. What is the term for the process of transforming raw remote sensing data into information? (A) Data acquisition (B) Data processing (C) Data collection (D) Data analysis 8. What is a âpixelâ in the context of remote sensing imagery? (A) A method of data transmission (B) A type of satellite sensor (C) A remote sensing platform (D) The smallest unit of an image that represents a specific area on the ground 9. Which of the following is a passive remote sensing technique? (A) Lidar (B) Radar (C) Photography (D) Ultrasonics 10. Which remote sensing technology uses radio waves to measure distances and create images? (A) Radar (B) Lidar (C) Hyperspectral imaging (D) Photography 11. What is the main advantage of using multispectral imaging in remote sensing? (A) It provides data in multiple wavelength bands, enhancing information extraction (B) It measures only visible light (C) It is used for real-time video streaming (D) It focuses only on ground-based measurements 12. What is âradiometric resolutionâ in remote sensing? (A) The ability of a sensor to distinguish different levels of radiance (B) The capacity to capture high-resolution images (C) The precision of satellite positioning (D) The frequency range of the sensor 13. What does âspatial resolutionâ refer to in remote sensing? (A) The range of wavelengths a sensor can detect (B) The size of the smallest object that can be resolved in an image (C) The speed of data transmission (D) The accuracy of geographic coordinates 14. Which remote sensing application is commonly used for disaster monitoring? (A) Flood mapping (B) Soil fertility analysis (C) Agricultural yield prediction (D) Urban planning 15. Which band of the electromagnetic spectrum is commonly used for thermal remote sensing? (A) Thermal infrared (B) Ultraviolet (C) X-ray (D) Gamma rays 16. What is the primary goal of âimage classificationâ in remote sensing? (A) To measure temperature changes (B) To categorize pixels into different land cover types (C) To track satellite positions (D) To enhance image clarity 17. What does the term âspectral resolutionâ refer to in remote sensing? (A) The precision of spatial coordinates (B) The size of the image pixels (C) The speed of data collection (D) The ability of a sensor to distinguish between different wavelengths 18. Which satellite is known for its hyperspectral imaging capabilities? (A) Landsat 8 (B) EO-1 (Earth Observing-1) (C) MODIS (D) GOES 19. What type of remote sensing data is best for monitoring vegetation health? (A) Thermal infrared data (B) Radar data (C) Multispectral data in the visible and near-infrared bands (D) X-ray data 20. What does the term âtemporal resolutionâ refer to in remote sensing? (A) The frequency at which a sensor acquires data of the same area (B) The ability to measure different wavelengths (C) The size of the image pixels (D) The accuracy of spatial coordinates 21. Which of the following is a common application of radar remote sensing? (A) Soil nutrient analysis (B) Water quality assessment (C) Surface topography mapping (D) Atmospheric temperature measurement 22. What is âdata fusionâ in the context of remote sensing? (A) The integration of data from multiple sensors to improve analysis (B) The process of converting raw data into images (C) The collection of ground-based measurements (D) The storage of remote sensing data 23. Which of the following is NOT a typical component of a remote sensing system? (A) Data acquisition sensors (B) Data processing software (C) Ground-based survey equipment (D) Communication systems 24. What type of sensor is used in active remote sensing? (A) Radar (B) Passive optical sensors (C) Hyperspectral sensors (D) Thermal sensors 25. What is âgeoreferencingâ in remote sensing? (A) The calibration of remote sensing instruments (B) The creation of detailed maps from remote sensing data (C) The analysis of spectral signatures (D) The process of aligning remote sensing data with geographic coordinates 26. Which technique is used to measure the Earthâs surface elevation? (A) Multispectral imaging (B) Lidar (C) Thermal infrared sensing (D) Hyperspectral imaging 27. What does the term âatmospheric correctionâ refer to in remote sensing? (A) The enhancement of image resolution (B) The adjustment of satellite orbits (C) The process of removing atmospheric effects from remote sensing data (D) The calibration of ground-based sensors 28. Which of the following is a characteristic of high-resolution remote sensing imagery? (A) Broad spatial coverage (B) Limited ability to detect small features (C) Detailed information with small ground sample distances (D) Low data accuracy 29. What is the main advantage of using hyperspectral imaging? (A) It captures data at a high temporal resolution (B) It only provides visible light images (C) It measures only the temperature of surfaces (D) It captures a wide range of wavelengths, providing detailed spectral information 30. Which remote sensing technology is typically used for monitoring atmospheric gases? (A) Radar (B) Spectroscopy (C) Lidar (D) Thermal imaging 31. What is a key benefit of using satellite imagery for agricultural monitoring? (A) It provides regular and comprehensive coverage of large agricultural areas (B) It measures soil pH directly (C) It replaces the need for ground-based sensors (D) It detects underground water sources 32. Which term refers to the ability of a sensor to detect and record different wavelengths of light? (A) Radiometric resolution (B) Spatial resolution (C) Temporal resolution (D) Spectral resolution 33. What is the primary use of MODIS data? (A) High-resolution urban planning (B) Detailed ground-level mapping (C) Earth surface and atmospheric monitoring (D) Space debris tracking 34. Which of the following is a limitation of passive remote sensing? (A) It is less accurate than active remote sensing (B) It has high operational costs (C) It cannot operate in the absence of sunlight (D) It requires complex calibration 35. Which type of imagery is best for urban planning and development? (A) Infrared imagery (B) Low-resolution satellite imagery (C) Hyperspectral imagery (D) High-resolution aerial imagery 36. What does âimage enhancementâ in remote sensing involve? (A) Improving the visual quality of images for better interpretation (B) Increasing the spatial resolution of an image (C) Adding additional data layers (D) Changing the sensor calibration 37. Which remote sensing technique is used to monitor coastal erosion? (A) Lidar (B) Aerial photography (C) Thermal infrared sensing (D) Soil sampling 38. What is the role of ground control points (GCPs) in remote sensing? (A) To measure atmospheric conditions (B) To provide reference locations for georeferencing (C) To enhance image quality (D) To track satellite movement 39. Which technology is commonly used in precision agriculture? (A) Manual soil sampling (B) Remote sensing (C) Traditional farming methods (D) Crop rotation 40. What is the main application of thermal remote sensing? (A) Analyzing air quality (B) Monitoring soil moisture (C) Detecting vegetation types (D) Measuring land surface temperature