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WorksheetsESRI Drone 2 Map Part 1A Practice (SLIDES 1-30)
Total questions: 82
Worksheet time: 41mins
What is one of the main topics covered in the outline of the document?
Fundamentals of Remote Sensing
History of Remote Sensing
Remote Sensing in Agriculture
Remote Sensing Software
Which of the following is a subtopic under "Vehicles and Sensors"?
Types
History
Software
Agriculture
What is discussed in the section about "Advantages/Disadvantages"?
Remote Sensing
Remote Sensing in Medicine
Remote Sensing in Education
Remote Sensing in History
What is remote sensing?
Direct measurement of an object by touching it
Measurement of a quantity associated with an object by a device not in direct contact with the object
Measurement of temperature using a thermometer
Direct observation of an object using a microscope
Which factor determines the most useful platform for remote sensing?
The color of the object
The application
The size of the object
The distance from the object
What are some considerations when using remote sensing?
The color of the device
The type of battery used
What information and how much detail is needed
The weight of the device
What do satellites and drones carry to measure electromagnetic radiation?
Cameras
Instruments or sensors
Antennas
Microphones
What type of radiation do satellites and drones measure from the earth-atmosphere system?
Sound waves
Electromagnetic radiation
Thermal radiation
Nuclear radiation
What do satellites measure in relation to the Earth's atmosphere?
Only surface conditions
Only atmospheric conditions
Both surface and atmospheric conditions
Neither surface nor atmospheric conditions
What do UASs primarily measure?
Atmospheric conditions only
Surface conditions at a given time
Both surface and atmospheric conditions
Neither surface nor atmospheric conditions
What does the Earth-Ocean-Land-Atmosphere System do with solar radiation?
Absorbs all solar radiation
Reflects solar radiation back to space
Converts solar radiation into sound
Blocks solar radiation completely
Which types of radiation does the Earth-Ocean-Land-Atmosphere System emit to space?
Gamma and X-Ray
Ultraviolet and Visible
Infrared and Microwave
TV/Radio and X-Ray
What is the range of wavelengths for visible light in the electromagnetic spectrum?
0.1 to 0.3 micrometers
0.4 to 0.7 micrometers
0.7 to 1.0 micrometers
1.0 to 1.3 micrometers
What wavelengths do healthy, green vegetation absorb?
Green and Infrared
Blue and Red
Red and Green
Blue and Green
What wavelengths do healthy, green vegetation reflect?
Blue and Red
Red and Infrared
Green and Infrared
Blue and Green
Why do we see healthy vegetation as green?
Because it absorbs green light
Because it reflects blue light
Because it reflects green light
Because it absorbs infrared light
Why does water usually appear blue or blue-green?
Water absorbs shorter visible wavelengths more.
Water reflects longer visible wavelengths more.
Water absorbs longer visible wavelengths and near-IR radiation more.
Water reflects near-IR radiation more.
What effect does sediment in the upper layers of water have on its appearance?
It makes the water appear darker.
It increases absorption of light.
It results in more reflectance and a brighter appearance.
It decreases the reflectance of light.
What is a spectral signature?
A unique pattern of light absorption and reflection by a surface
A type of musical notation
A method of cooking
A style of painting
Which type of vegetation is used as an example in the document?
Healthy vegetation
Desert vegetation
Aquatic vegetation
Urban vegetation
What type of information does remotely sensed imagery acquire?
Sound waves
Electromagnetic spectrum
Magnetic fields
Gravitational waves
What does the graph in the image represent?
Temperature variations
Reflection percentages
Sound frequencies
Pressure levels
Which material shows the highest reflection in the visible spectrum according to the graph?
Water
Soil
Vegetation
Metal
What is the primary source of energy that satellites and drones use to collect data?
Reflected Solar Radiation
Wind Energy
Geothermal Energy
Nuclear Energy
Which of the following surfaces is NOT shown in the diagram as reflecting solar radiation?
Forest
Water
Snow
Built-up Area
What role does the atmosphere play in the process of data collection by satellites and drones?
It absorbs all solar radiation.
It reflects some solar radiation.
It generates solar radiation.
It blocks all solar radiation.
Which of the following is NOT a type of resolution mentioned in the context of satellite, drone, and sensor characteristics?
Spectral Resolution
Spatial Resolution
Temporal Resolution
Logical Resolution
What are the three types of resolutions discussed in the context of satellite, drone, and sensor characteristics?
Spectral, Spatial, Temporal
Logical, Physical, Digital
Visual, Auditory, Kinesthetic
Linear, Circular, Angular
What are Earth-observing satellite remote sensing instruments named according to?
The satellite (also called platform)
The instrument (also called sensor)
The mission duration
The launch date
Which satellite has six instruments including MODIS and CERES?
Landsat 8
Aqua Satellite
Terra Satellite
Sentinel-2
How many instruments does Landsat 8 have?
Four
Two
Six
Eight
What does UAS stand for in the context of drones?
Unmanned Aerial System
Universal Aerial System
Unmanned Automated System
Universal Automated System
Which of the following sensors can be equipped on drones?
Multi- and hyperspectral
Infrared only
Ultrasonic only
Magnetic only
Why might drones be operated in fleets?
To collect data over large areas simultaneously
To reduce battery consumption
To increase flight speed
To avoid air traffic
What is a key requirement when processing data collected by drones?
Correcting geometric inconsistencies
Increasing flight altitude
Reducing sensor weight
Enhancing battery life
What are UAS platforms classified based on?
Color, speed, and weight
Size, flight altitude, and flight duration
Cost, manufacturer, and model
Range, power, and material
What does the acronym HALE stand for in the context of UAS platforms?
High Altitude Long Endurance
Heavy Altitude Low Endurance
High Altitude Low Endurance
Heavy Altitude Long Endurance
What is the range of UAS platforms in terms of size and duration?
Small to medium, minutes to hours
Very small to large, meters to 10,000s of meters, and from hours to more than a day
Medium to large, kilometers to miles, and from minutes to hours
Small to large, centimeters to kilometers, and from seconds to hours
What do passive remote sensors measure?
Radiant energy reflected or emitted by the Earth-atmosphere system
Sound waves in the atmosphere
Magnetic fields of the Earth
Electrical currents in the atmosphere
What are some bio-geophysical quantities that radiant energy is converted to?
Temperature, precipitation, soil moisture, chlorophyll-a
Sound, light, magnetism, electricity
Pressure, volume, density, velocity
Mass, weight, height, depth
Which of the following is an example of a passive remote sensor?
Landsat
Radar
Sonar
Ultrasound
What is a key advantage of active remote sensors?
They are inexpensive to use.
They can be used only during the day.
They can penetrate cloud and vegetation cover.
They do not require processing.
What is a disadvantage of active remote sensors?
They are easy to process.
They are very expensive.
They cannot be used at night.
They do not measure back-scattered radiation.
Which of the following is an example of an active remote sensor?
Thermometer
Radar
Barometer
Anemometer
What does spectral resolution describe?
The ability of a sensor to define fine wavelength intervals
The ability of a sensor to capture high-resolution images
The ability of a sensor to detect temperature changes
The ability of a sensor to measure atmospheric pressure
What is an example of a hyperspectral sensor?
Landsat
MODIS
AVIRIS
Sentinel-2
How many bands does a multispectral sensor like Landsat typically have?
256 bands
7-11 bands
36 bands
100 bands
What does spatial resolution refer to in an image?
The color depth of an image
The detail discernable in an image by a pixel
The size of the image file
The brightness of an image
Which sensor has a spatial resolution of 30 meters?
DigitalGlobe
Landsat
MODIS
Most UASs
What is the spatial resolution range for MODIS?
2-15 cm
<1-4 m
250 m-1 km
30 m
Which sensor provides the highest spatial resolution?
DigitalGlobe
Landsat
MODIS
Most UASs
What is the tradeoff mentioned in the context of spatial resolution?
Tradeoff between spatial resolution and spatial extent
Tradeoff between spatial resolution and color depth
Tradeoff between spatial resolution and time
Tradeoff between spatial resolution and cost
What determines the spatial resolution in a UAS platform?
The frequency of satellite observations
The pixel size
The altitude of the satellite
The color depth of the image
What is the smallest unit measured by a sensor in terms of spatial resolution?
Frequency
Altitude
Pixel
Color depth
What does temporal resolution refer to in satellite observations?
The size of the pixel
The frequency of observations
The altitude of the satellite
The color depth of the image
What does MAV stand for in the context of UAS platforms?
Micro or Nano Aerial Vehicles
Medium Altitude Vehicles
Maximum Altitude Vehicles
Miniature Aerial Vehicles
Which type of UAS platform requires no runway and is suitable for difficult terrain?
VTOLs
LALE
MALE
HALE
What is the typical flight duration for LASE (Low Altitude Short Endurance) UAS platforms?
1-2 hours
5-10 hours
10-15 minutes
3-4 hours
Which UAS platform is capable of flying at altitudes up to 9,000 meters?
MALE
MAV
LASE
VTOL
What is the relationship between spatial resolution and the area covered by a single image?
Higher spatial resolution covers more area.
Higher spatial resolution covers less area.
Higher spatial resolution has no effect on area covered.
Higher spatial resolution covers the same area.
What is the term used to describe the time it takes for a satellite to complete one orbit cycle?
Orbit duration
Revisit time
Cycle time
Satellite period
Which factors affect the temporal resolution of a satellite?
Satellite color and size
Sensor capabilities, swath overlap, and latitude
Orbit speed and altitude
Weather conditions and time of day
What is the revisit time for the Landsat sensor?
2-days
16-days
1-2 days
On demand
Which sensor has a revisit time of 2 days?
Landsat
MODIS
Commercial (OrbView)
UAS platforms
What is the revisit time for UAS platforms?
16-days
2-days
1-2 days
On demand
What is the field of view range for UAS (Unmanned Aerial Systems)?
10 – 50 km
2 – 5 km
50 – 500 m
1 – 30 m
Which data types are associated with Airborne systems?
Multispectral
Aerial Photography, Light Detection And Ranging (LiDAR)
Multispectral and LiDAR
Thermal Imaging
How often is the temporal resolution for Satellite data acquisition?
5 - 16 Days
Yearly
On demand
Monthly
What is the spatial resolution range for Airborne systems?
1 - 30 m
30 cm - 1 m
0.5 – 10 cm
50 – 500 m
Which system has a very high cost for high resolution imagery?
Satellite
Airborne
UAS
Ground-based
What is one advantage of drone remote sensing in terms of operational areas?
Can only be used in large open fields
Can be operated over study areas at a variety of scales, including very small or constrained areas
Requires a large runway for operation
Limited to urban areas only
What type of data resolution can drones collect?
Low spatial resolution
Medium spatial resolution
Very high spatial resolution
No spatial resolution
How frequently can drones collect data?
Once a year
Very infrequently
Very frequently (very high temporal resolution)
Only during the day
What flexibility do drones offer to users in terms of mission design?
No flexibility in mission design
Limited to pre-set missions
Freedom to design custom missions using specific sensors
Only allows for standard missions
What is a portability advantage of some drones?
Require a large vehicle for transport
Can be carried in a backpack
Must be transported by air
Need a dedicated trailer
In what situations can drones be used where manned aircraft would be in danger?
In open fields
Over oceans
Where manned aircraft would be in danger (e.g., fires, narrow canyons)
In urban areas only
What is a challenge associated with the payloads in drone remote sensing?
Payloads are often large, so heavy sensors need to be used.
Payloads are often small, so lightweight sensors need to be used.
Payloads are often small, so heavy sensors need to be used.
Payloads are often large, so lightweight sensors need to be used.
Why is the cost high in drone remote sensing?
Because drones are expensive to manufacture.
Because lightweight sensors are costly.
Because heavier sensors are expensive to lift.
Because drones require frequent maintenance.
What is the current state of the regulatory environment in drone remote sensing?
It is well-established and stable.
It is still in flux.
It is completely unregulated.
It is strictly controlled.
What makes flying drones challenging in remote sensing?
Lack of skilled operators.
Weather conditions like wind.
High altitude requirements.
Limited battery life.
What is a difficulty associated with georectifying imagery in drone remote sensing?
It is easy and quick.
It is difficult or field-intensive.
It requires no special equipment.
It is automated and simple.
What is a challenge related to image processing in drone remote sensing?
It is straightforward and fast.
It is complicated and time-consuming.
It requires minimal resources.
It is unnecessary for most applications.
