GST 101 - Module 6 Self-assessment Quiz

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| Written by Rickasmith

Rickasmith

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Total Contribution - 7 | Total attempts - 2,129

Questions: 10 | Attempts: 556 | Updated: Mar 20, 2023

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Self-assessment quiz for GST 101 - Module 6 - Understanding Remote Sensing and Aerial Photography

Questions and Answers

1.

The full range of wavelengths is called the magnetic spectrum.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The full range of wavelengths is called the electromagnetic spectrum.

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2.

Objects appear as the color they most absorb.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Objects appear as the color they most reflect.

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3.

RADAR is a well-known active remote sensing system.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Active remote sensing systems, such as RADAR, emit and record energy they produce.

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4.

Image scale is the relative distance on images to distance on the ground.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Knowing the image scale allows for accurate measurements.

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5.

The infrared wavelength is very useful for mapping vegetation.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The infrared wavelength can tell us plant health among other useful observations.

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6.

Scale is always constant on an aerial photograph.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Due to the many types of distortion possible when taking an aerial photograph, scale is variable across an aerial photograph.

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7.

Photointerpretation is the process of converting images to information.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Photointerpretation can produce very useful products, like land use/land cover data sets.

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8.

A stereo model is composed of a single photograph, but taken at an extremely high altitude.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
A stereo model requires at least two photographs taken at two slightly different perspectives of the same location.

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9.

Satellite images typically cover a larger area than aerial images.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Because satellites are further away from Earth, their images typically cover a larger area than aerial images.

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10.

For any project size, aerial imagery is always cheaper to obtain than satellite imagery.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
For projects that cover a very large area of Earth, satellite imagery may be cheaper to obtain as satellites can cover larger portions of the Earth much quicker than aircraft.

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GST 101 - Module 6 Self-assessment Quiz

The full range of wavelengths is called the magnetic spectrum.

Objects appear as the color they most absorb.

RADAR is a well-known active remote sensing system.

Image scale is the relative distance on images to distance on the ground.

The infrared wavelength is very useful for mapping vegetation.

Scale is always constant on an aerial photograph.

Photointerpretation is the process of converting images to information.

A stereo model is composed of a single photograph, but taken at an extremely high altitude.

Satellite images typically cover a larger area than aerial images.

For any project size, aerial imagery is always cheaper to obtain than satellite imagery.