WEB MAPPING EXAMINATION TEST SOLVED
QUESTIONS 2026 FINAL PAPER VIEW AHEAD
EXAM
⫸ Name two examples of remote sensing technologies. Answer:
Aerial photographs and satellites.
⫸ What is a passive remote sensor? Answer: A sensor that detects
only received light, like photo-imagery satellites.
⫸ What does temporal resolution refer to? Answer: How often a
sensor can return to image the same spot on Earth.
⫸ What is spatial resolution? Answer: The size of the smallest object
a remote sensor can detect.
⫸ What is spectral resolution? Answer: The bands and their
wavelengths measured by the sensor along the electromagnetic
spectrum.
⫸ What is radiometric resolution? Answer: The ability of a sensor to
detect differences in energy levels.
,⫸ What is relief displacement in aerial imagery? Answer: The effect
where tall objects appear to lean outward from the photo's center.
⫸ What is an orthophoto? Answer: An image corrected for camera
perspective, ensuring consistent geographic scale.
⫸ What happens during transmission of energy? Answer: Energy
passes through a surface to interact with something else later.
⫸ What is absorption in remote sensing? Answer: When energy is
trapped and held by a surface.
⫸ What do remote sensing devices measure? Answer: The reflectance
of energy from a surface.
⫸ How do different materials reflect EMR? Answer: Different
materials reflect or absorb EMR differently, affecting how we see
them.
⫸ What is true color imagery? Answer: Imagery where input data
matches the RGB bands we see.
⫸ What is the swath width of a Landsat satellite? Answer: 185
kilometers.
, ⫸ What is the advantage of using satellites for remote sensing?
Answer: They provide global coverage and can image larger areas
than aircraft.
⫸ What does it mean if a sensor has a finer temporal resolution?
Answer: It returns to image the same spot more frequently.
⫸ What is the visible light spectrum? Answer: The portion of the
electromagnetic spectrum visible to the human eye, between 0.4 and
0.7 micrometers.
⫸ How do our eyes perceive color? Answer: Through three types of
cone cells sensitive to red, green, and blue light.
⫸ What is the role of sunlight in remote sensing? Answer: Sunlight
reflects off surfaces, which is then measured by sensors.
⫸ What is the significance of different wavelengths in remote
sensing? Answer: Different wavelengths can indicate different
materials or conditions on the ground.
⫸ What is the primary challenge in showing unseen bands in remote
sensing? Answer: Representing bands like reflective infrared or
thermal infrared that are not visible to the human eye.
⫸ Why can't a photo be used as a map? Answer: Photos do not
maintain a consistent scale across the image.
QUESTIONS 2026 FINAL PAPER VIEW AHEAD
EXAM
⫸ Name two examples of remote sensing technologies. Answer:
Aerial photographs and satellites.
⫸ What is a passive remote sensor? Answer: A sensor that detects
only received light, like photo-imagery satellites.
⫸ What does temporal resolution refer to? Answer: How often a
sensor can return to image the same spot on Earth.
⫸ What is spatial resolution? Answer: The size of the smallest object
a remote sensor can detect.
⫸ What is spectral resolution? Answer: The bands and their
wavelengths measured by the sensor along the electromagnetic
spectrum.
⫸ What is radiometric resolution? Answer: The ability of a sensor to
detect differences in energy levels.
,⫸ What is relief displacement in aerial imagery? Answer: The effect
where tall objects appear to lean outward from the photo's center.
⫸ What is an orthophoto? Answer: An image corrected for camera
perspective, ensuring consistent geographic scale.
⫸ What happens during transmission of energy? Answer: Energy
passes through a surface to interact with something else later.
⫸ What is absorption in remote sensing? Answer: When energy is
trapped and held by a surface.
⫸ What do remote sensing devices measure? Answer: The reflectance
of energy from a surface.
⫸ How do different materials reflect EMR? Answer: Different
materials reflect or absorb EMR differently, affecting how we see
them.
⫸ What is true color imagery? Answer: Imagery where input data
matches the RGB bands we see.
⫸ What is the swath width of a Landsat satellite? Answer: 185
kilometers.
, ⫸ What is the advantage of using satellites for remote sensing?
Answer: They provide global coverage and can image larger areas
than aircraft.
⫸ What does it mean if a sensor has a finer temporal resolution?
Answer: It returns to image the same spot more frequently.
⫸ What is the visible light spectrum? Answer: The portion of the
electromagnetic spectrum visible to the human eye, between 0.4 and
0.7 micrometers.
⫸ How do our eyes perceive color? Answer: Through three types of
cone cells sensitive to red, green, and blue light.
⫸ What is the role of sunlight in remote sensing? Answer: Sunlight
reflects off surfaces, which is then measured by sensors.
⫸ What is the significance of different wavelengths in remote
sensing? Answer: Different wavelengths can indicate different
materials or conditions on the ground.
⫸ What is the primary challenge in showing unseen bands in remote
sensing? Answer: Representing bands like reflective infrared or
thermal infrared that are not visible to the human eye.
⫸ Why can't a photo be used as a map? Answer: Photos do not
maintain a consistent scale across the image.
