Question 1
1 ptWhich type of electromagnetic wave has the shortest wavelength?
Remote Sensing · Division B · Blue Dragon Invitational - NY · 2026
80 questions · 80 points · 50 min
Original test sourceBe sure to write neatly so that your answers can be graded. All answers must be written on the answer sheet.
Which type of electromagnetic wave has the shortest wavelength?
When light bounces off a surface, the process is called:
Light bending as it passes from air into water is an example of:
Occurs when atmospheric particles are much smaller than the incoming radiation wavelength.
Which process causes the sky to appear blue?
A material that absorbs most wavelengths but reflects green light will appear:
Polarized light is light that:
Radiance is best described as:
Occurs when incident radiation is reflected in one direction.
Which part of the electromagnetic spectrum is most commonly used for vegetation studies?
What is a geoid?
A passive sensor requires:
Which of the following is an active sensor?
Which sensor type is best for detecting heat emitted from Earth's surface?
A measure of the extinction of a beam of insolation by dust and haze.
Radar sensors are especially useful because they can:
A UV sensor would be most useful for detecting:
Passive visible-light sensors cannot collect data:
Which sensor type is best for mapping surface roughness?
A satellite that stays above the same point on Earth is in what orbit?
Polar-orbiting satellites are especially good for:
Low Earth orbit satellites typically have:
A geosynchronous orbit:
Medium Earth orbit is most commonly used for:
A satellite that passes near both poles each orbit is:
High Earth orbit satellites are typically used for:
Spatial resolution refers to:
A satellite that revisits the same location every 24 hours has a temporal resolution of:
Radiometric resolution describes a sensor's ability to:
A sensor with higher signal-to-noise ratio will produce images that are:
Spectral resolution refers to:
A 10-meter spatial resolution image means each pixel represents:
A sensor that captures hundreds of narrow wavelength bands is:
A panchromatic image contains:
A scanning system that sweeps across Earth line-by-line is called:
A multispectral imaging system collects:
Optical imagers primarily detect:
Which satellite program provides near-daily global coverage with coarse spatial resolution ideal for large-scale climate monitoring?
Which satellite program includes thermal infrared and shortwave infrared bands useful for identifying rock and mineral types?
Which of the following bearings would equate to an azimuth of 220°?
A radiometer measures:
Radar altimetry is used to measure:
A pushbroom scanner collects data using:
Which of these is NOT a capability of the Terra MODIS satellite?
Which instrument is best for mapping land-use change over time?
Which system is most likely to detect thermal pollution in a river?
Landsat 9 carries a sensor named the OLI-2. What does the acronym mean?
A whiskbroom scanner collects data by:
Sentinel 2A and 2B were launched during the Copernicus mission of which space agency?
Which instrument would be most useful for detecting soil moisture under vegetation?
Explain why ultraviolet radiation has a higher frequency than visible light.
Provide an explanation of why the sky appears blue.
What is the difference between irradiance and radiance?
What type of satellite orbit is most useful for the continuous monitoring of one location?
Refer to Image A.
Identify which sensor is active and which is passive.
Explain how you know.
Refer to Image B.
What property of wildfires allows them to be detected clearly in this infrared image?
Refer to Image C.
What does HEO and LEO stand for?
Provide one advantage of each with regard to remote sensing.
Refer to Image D.
What type of resolution is depicted in the 3 sections of the image?
Briefly describe this type of resolution.
Refer to Image E.
What type of resolution is depicted in the 3 sections of the image?
Briefly describe this type of resolution.
Refer to Image F.
What type of resolution is depicted in the 4 sections of the image regarding ground moisture?
Briefly describe this type of resolution.
Refer to Image G.
What type of resolution is depicted in the 3 sections of the image of California's Central Valley?
Briefly describe this type of resolution.
Refer to Image H.
What quantifiable characteristic is being depicted by the 4 sets of images and graphs?
Next, put the images in increasing order based on the value of this characteristic.
Refer to Image I. This satellite is measuring the elevation of the land and water surface.
What is the name of the type of instrumentation used in the satellite to do this?
Explain the basic principal behind how it works.
Refer to Image J.
Explain the reason behind why the bright red areas in this image indicate healthy rather than unhealthy vegetation.
Refer to Image K.
What phenomenon is shown in this image as the light ray travels from one medium to another?
Why does the light ray change direction?
Refer to Image L.
What process is shown in the image?
Refer to Image M.
What is the contour interval of the map (in feet)?
What are the highest and lowest possible elevations of point K on top of Rock Mountain?
What general compass direction (of the 8 cardinal points) does Fish Creek flow?
Between which pair of lettered dots (A-Y, B-Z, C-D) is the gradient of Rock Mountain steepest?
A student hikes from campground H to campground I. The next day she hikes from campground I to point K (top of Rock Mountain) and then to campground E. Record the distance hiked and the azimuth (0° to 360°) traveled for each segment of the journey.