GIS Data Acquisition and Input

Description: This quiz assesses your knowledge of GIS data acquisition and input methods, including data sources, collection techniques, and data quality considerations.
Number of Questions: 15
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Tags: gis data acquisition data input remote sensing field surveys data quality
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Which of the following is NOT a common source of GIS data?

  1. Satellite imagery

  2. Aerial photography

  3. Census data

  4. Social media data


Correct Option: D
Explanation:

Social media data is not typically used as a primary source of GIS data due to its unstructured nature and potential for bias.

What is the process of collecting GIS data in the field called?

  1. Remote sensing

  2. Field surveying

  3. Data mining

  4. Web scraping


Correct Option: B
Explanation:

Field surveying involves collecting GIS data directly from the environment using tools such as GPS receivers, total stations, and field notebooks.

Which remote sensing technology uses radar waves to create images of the Earth's surface?

  1. Lidar

  2. SAR

  3. Multispectral imagery

  4. Hyperspectral imagery


Correct Option: B
Explanation:

SAR (Synthetic Aperture Radar) uses radar waves to create images of the Earth's surface, regardless of weather conditions or time of day.

What is the term for the process of converting analog data into digital format?

  1. Digitizing

  2. Vectorization

  3. Rasterization

  4. Geocoding


Correct Option: A
Explanation:

Digitizing is the process of converting analog data, such as maps or aerial photographs, into digital format using a digitizing tablet or software.

Which of the following is NOT a common GIS data format?

  1. Shapefile

  2. GeoJSON

  3. KML

  4. CSV


Correct Option: D
Explanation:

CSV (Comma-Separated Values) is a text file format commonly used for storing tabular data, but it is not a GIS-specific data format.

What is the process of assigning geographic coordinates to features in a GIS dataset called?

  1. Geocoding

  2. Georeferencing

  3. Digitizing

  4. Vectorization


Correct Option: A
Explanation:

Geocoding is the process of assigning geographic coordinates to features in a GIS dataset, typically using address or place name information.

Which of the following is NOT a common method for ensuring the quality of GIS data?

  1. Data validation

  2. Data cleaning

  3. Data transformation

  4. Data augmentation


Correct Option: D
Explanation:

Data augmentation is not a common method for ensuring data quality, as it involves artificially increasing the size of a dataset by generating synthetic data.

What is the term for the process of combining data from multiple sources into a single GIS dataset?

  1. Data integration

  2. Data fusion

  3. Data merging

  4. Data harmonization


Correct Option: A
Explanation:

Data integration is the process of combining data from multiple sources into a single GIS dataset, often involving harmonizing data formats and structures.

Which of the following is NOT a common type of GIS data?

  1. Vector data

  2. Raster data

  3. Attribute data

  4. Metadata


Correct Option: D
Explanation:

Metadata is not a type of GIS data, but rather information about the data, such as its source, accuracy, and limitations.

What is the term for the process of converting raster data into vector data?

  1. Vectorization

  2. Rasterization

  3. Digitizing

  4. Georeferencing


Correct Option: A
Explanation:

Vectorization is the process of converting raster data, which is composed of pixels, into vector data, which is composed of points, lines, and polygons.

Which of the following is NOT a common GIS data acquisition method?

  1. Remote sensing

  2. Field surveying

  3. Web scraping

  4. Social media data


Correct Option: D
Explanation:

Social media data is not typically used as a primary source of GIS data due to its unstructured nature and potential for bias.

What is the term for the process of assigning thematic attributes to features in a GIS dataset?

  1. Classification

  2. Clustering

  3. Interpolation

  4. Georeferencing


Correct Option: A
Explanation:

Classification is the process of assigning thematic attributes to features in a GIS dataset, such as land use categories or soil types.

Which of the following is NOT a common GIS data quality issue?

  1. Incompleteness

  2. Inaccuracy

  3. Inconsistency

  4. Redundancy


Correct Option: D
Explanation:

Redundancy is not a common GIS data quality issue, as it refers to the presence of duplicate data, which can be easily identified and removed.

What is the term for the process of creating a seamless mosaic of images from multiple sources?

  1. Orthorectification

  2. Pan sharpening

  3. Image classification

  4. Image mosaicking


Correct Option: D
Explanation:

Image mosaicking is the process of creating a seamless mosaic of images from multiple sources, often used to create large-scale maps or orthophotos.

Which of the following is NOT a common GIS data source?

  1. Census data

  2. Topographic maps

  3. Aerial photography

  4. Social media data


Correct Option: D
Explanation:

Social media data is not typically used as a primary source of GIS data due to its unstructured nature and potential for bias.

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