CONS 127 EXAM REVIEW 2026 COMPLETE
QUESTIONS AND ANSWERS ALREADY
PASSED
◉ spatial resolution
Answer: the size of the pixel of a certain picture has
◉ 3 components of spectral resolution
Answer: 1. number of spectral channels or bands used
2. their location in the electromagnetic spectrum
3. the bandwidth of each channel or band
◉ 3 satellites that use geostationary orbits
Answer: -tv
-cellphone
-weather
◉ GPS doesn't work when...
Answer: the signal is blocked by forests, buildings or tunnels; if the
receiver is underwater or underground or if the signal can't be
received
,◉ what can be observed at a spatial resolution of 1km
Answer: snow cover extent
◉ what can be observed at a spatial resolution of 30m
Answer: forest cover
◉ what can be observed at a spatial resolution of <1m
Answer: specific trees, housing planning
◉ Active remote sensing
Answer: -when energy is provided by the sensors for illumination
-The sensor measures radiation that's been reflected from a target
◉ Passive remote sensing
Answer: when the sensor uses energy that happens naturally from
the sun. The sensors can detect energy day or night.
◉ 2 advantages to active remote sensing technologies
Answer: 1. it does not depend on the weather or sunlight
2. it can penetrate vegetation and soil to get information about
layers of the surface of the Earth
, ◉ 2 disadvantages to active remote sensing technologies
Answer: 1.other forms of radiation can interfere
2. it's complicated and expensive.
◉ part of the electromagnetic spectrum used by RADAR
Answer: radio and microwaves
◉ 3 components used in a LiDAR remote sensing system
Answer: 1. laser ranging to receive a distance measurement that is
accurate
2. a GPS to find the position and height of the sensor
3. a measurement called an inertial measurement unit to record the
position of the sensor
◉ near infrared ___________ when it hits water
Answer: water absorbs near infrared light
◉ What happens to near infrared photons when they intercept
healthy vegetation?
Answer: When near infrared photons come across healthy
vegetation, blue and red light energy is absorbed to give the
vegetation enough energy to start photosynthesis. Near infrared
QUESTIONS AND ANSWERS ALREADY
PASSED
◉ spatial resolution
Answer: the size of the pixel of a certain picture has
◉ 3 components of spectral resolution
Answer: 1. number of spectral channels or bands used
2. their location in the electromagnetic spectrum
3. the bandwidth of each channel or band
◉ 3 satellites that use geostationary orbits
Answer: -tv
-cellphone
-weather
◉ GPS doesn't work when...
Answer: the signal is blocked by forests, buildings or tunnels; if the
receiver is underwater or underground or if the signal can't be
received
,◉ what can be observed at a spatial resolution of 1km
Answer: snow cover extent
◉ what can be observed at a spatial resolution of 30m
Answer: forest cover
◉ what can be observed at a spatial resolution of <1m
Answer: specific trees, housing planning
◉ Active remote sensing
Answer: -when energy is provided by the sensors for illumination
-The sensor measures radiation that's been reflected from a target
◉ Passive remote sensing
Answer: when the sensor uses energy that happens naturally from
the sun. The sensors can detect energy day or night.
◉ 2 advantages to active remote sensing technologies
Answer: 1. it does not depend on the weather or sunlight
2. it can penetrate vegetation and soil to get information about
layers of the surface of the Earth
, ◉ 2 disadvantages to active remote sensing technologies
Answer: 1.other forms of radiation can interfere
2. it's complicated and expensive.
◉ part of the electromagnetic spectrum used by RADAR
Answer: radio and microwaves
◉ 3 components used in a LiDAR remote sensing system
Answer: 1. laser ranging to receive a distance measurement that is
accurate
2. a GPS to find the position and height of the sensor
3. a measurement called an inertial measurement unit to record the
position of the sensor
◉ near infrared ___________ when it hits water
Answer: water absorbs near infrared light
◉ What happens to near infrared photons when they intercept
healthy vegetation?
Answer: When near infrared photons come across healthy
vegetation, blue and red light energy is absorbed to give the
vegetation enough energy to start photosynthesis. Near infrared
