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Blue Dragon Invitational - NY — Remote Sensing

Remote Sensing · Division B · Blue Dragon Invitational - NY · 2026

80 questions · 80 points · 50 min

Original test source

Be sure to write neatly so that your answers can be graded. All answers must be written on the answer sheet.

Multiple Choice

Question 1

1 pt

Which type of electromagnetic wave has the shortest wavelength?

Question 2

1 pt

When light bounces off a surface, the process is called:

Question 3

1 pt

Light bending as it passes from air into water is an example of:

Question 4

1 pt

Occurs when atmospheric particles are much smaller than the incoming radiation wavelength.

Question 5

1 pt

Which process causes the sky to appear blue?

Question 6

1 pt

A material that absorbs most wavelengths but reflects green light will appear:

Question 7

1 pt

Polarized light is light that:

Question 8

1 pt

Radiance is best described as:

Question 9

1 pt

Occurs when incident radiation is reflected in one direction.

Question 10

1 pt

Which part of the electromagnetic spectrum is most commonly used for vegetation studies?

Question 11

1 pt

What is a geoid?

Question 12

1 pt

A passive sensor requires:

Question 13

1 pt

Which of the following is an active sensor?

Question 14

1 pt

Which sensor type is best for detecting heat emitted from Earth's surface?

Question 15

1 pt

A measure of the extinction of a beam of insolation by dust and haze.

Question 16

1 pt

Radar sensors are especially useful because they can:

Question 17

1 pt

A UV sensor would be most useful for detecting:

Question 18

1 pt

Passive visible-light sensors cannot collect data:

Question 19

1 pt

Which sensor type is best for mapping surface roughness?

Question 20

1 pt

A satellite that stays above the same point on Earth is in what orbit?

Question 21

1 pt

Polar-orbiting satellites are especially good for:

Question 22

1 pt

Low Earth orbit satellites typically have:

Question 23

1 pt

A geosynchronous orbit:

Question 24

1 pt

Medium Earth orbit is most commonly used for:

Question 25

1 pt

A satellite that passes near both poles each orbit is:

Question 26

1 pt

High Earth orbit satellites are typically used for:

Question 27

1 pt

Spatial resolution refers to:

Question 28

1 pt

A satellite that revisits the same location every 24 hours has a temporal resolution of:

Question 29

1 pt

Radiometric resolution describes a sensor's ability to:

Question 30

1 pt

A sensor with higher signal-to-noise ratio will produce images that are:

Question 31

1 pt

Spectral resolution refers to:

Question 32

1 pt

A 10-meter spatial resolution image means each pixel represents:

Question 33

1 pt

A sensor that captures hundreds of narrow wavelength bands is:

Question 34

1 pt

A panchromatic image contains:

Question 35

1 pt

A scanning system that sweeps across Earth line-by-line is called:

Question 36

1 pt

A multispectral imaging system collects:

Question 37

1 pt

Optical imagers primarily detect:

Question 38

1 pt

Which satellite program provides near-daily global coverage with coarse spatial resolution ideal for large-scale climate monitoring?

Question 39

1 pt

Which satellite program includes thermal infrared and shortwave infrared bands useful for identifying rock and mineral types?

Question 40

1 pt

Which of the following bearings would equate to an azimuth of 220°?

Question 41

1 pt

A radiometer measures:

Question 42

1 pt

Radar altimetry is used to measure:

Question 43

1 pt

A pushbroom scanner collects data using:

Question 44

1 pt

Which of these is NOT a capability of the Terra MODIS satellite?

Question 45

1 pt

Which instrument is best for mapping land-use change over time?

Question 46

1 pt

Which system is most likely to detect thermal pollution in a river?

Question 47

1 pt

Landsat 9 carries a sensor named the OLI-2. What does the acronym mean?

Question 48

1 pt

A whiskbroom scanner collects data by:

Question 49

1 pt

Sentinel 2A and 2B were launched during the Copernicus mission of which space agency?

Question 50

1 pt

Which instrument would be most useful for detecting soil moisture under vegetation?

Short Answer

Question 51

1 pt

Explain why ultraviolet radiation has a higher frequency than visible light.

Question 52

1 pt

Provide an explanation of why the sky appears blue.

Question 53

1 pt

What is the difference between irradiance and radiance?

Question 54

1 pt

What type of satellite orbit is most useful for the continuous monitoring of one location?

FigureFor questions 55a, 55b

Refer to Image A.

Question 55a

1 pt

Identify which sensor is active and which is passive.

Question 55b

1 pt

Explain how you know.

FigureFor question 56

Refer to Image B.

Question 56

1 pt

What property of wildfires allows them to be detected clearly in this infrared image?

FigureFor questions 57a, 57b

Refer to Image C.

Question 57a

1 pt

What does HEO and LEO stand for?

Question 57b

1 pt

Provide one advantage of each with regard to remote sensing.

FigureFor questions 58a, 58b

Refer to Image D.

Question 58a

1 pt

What type of resolution is depicted in the 3 sections of the image?

Question 58b

1 pt

Briefly describe this type of resolution.

FigureFor questions 59a, 59b

Refer to Image E.

Question 59a

1 pt

What type of resolution is depicted in the 3 sections of the image?

Question 59b

1 pt

Briefly describe this type of resolution.

FigureFor questions 60a, 60b

Refer to Image F.

Question 60a

1 pt

What type of resolution is depicted in the 4 sections of the image regarding ground moisture?

Question 60b

1 pt

Briefly describe this type of resolution.

FigureFor questions 61a, 61b

Refer to Image G.

Question 61a

1 pt

What type of resolution is depicted in the 3 sections of the image of California's Central Valley?

Question 61b

1 pt

Briefly describe this type of resolution.

FigureFor questions 62a, 62b

Refer to Image H.

Question 62a

1 pt

What quantifiable characteristic is being depicted by the 4 sets of images and graphs?

Question 62b

1 pt

Next, put the images in increasing order based on the value of this characteristic.

FigureFor questions 63a, 63b

Refer to Image I. This satellite is measuring the elevation of the land and water surface.

Question 63a

1 pt

What is the name of the type of instrumentation used in the satellite to do this?

Question 63b

1 pt

Explain the basic principal behind how it works.

FigureFor question 64

Refer to Image J.

Question 64

1 pt

Explain the reason behind why the bright red areas in this image indicate healthy rather than unhealthy vegetation.

FigureFor questions 65a, 65b

Refer to Image K.

Question 65a

1 pt

What phenomenon is shown in this image as the light ray travels from one medium to another?

Question 65b

1 pt

Why does the light ray change direction?

FigureFor question 66

Refer to Image L.

Question 66

1 pt

What process is shown in the image?

FigureFor questions 67a, 67b, 67c, 67d, 67e

Refer to Image M.

Question 67a

1 pt

What is the contour interval of the map (in feet)?

Question 67b

1 pt

What are the highest and lowest possible elevations of point K on top of Rock Mountain?

Question 67c

1 pt

What general compass direction (of the 8 cardinal points) does Fish Creek flow?

Question 67d

1 pt

Between which pair of lettered dots (A-Y, B-Z, C-D) is the gradient of Rock Mountain steepest?

Question 67e

1 pt

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.