GIS Flashcards
(21 cards)
What is buffering in the context of school premises?
The creation of a protective or cushioning zone around the school premises to prevent or minimize the disturbance of external factors, e.g., noise pollution.
What is one importance of buffering?
Creates a quiet and peaceful atmosphere, improving the quality of learning.
Name two benefits of buffering for students.
- Reduces/minimizes distractions so students can focus better
- Enhances safety and security by helping to prevent unauthorized access.
How does buffering impact the environment?
Can reduce the impact of air and noise pollution, promoting a healthier environment.
What is one way buffering can enhance school premises?
By involving landscaping to enhance the visual appeal.
List three methods of buffering.
- Landscaping
- Fencing and walls
- Noise barriers, e.g., acoustic panels.
What is GIS?
A collection of computer hardware, software, people, processes, designed to capture, store, analyze, update, manipulate spatially referenced data.
What does spatially refer to in GIS?
Refers to the shape and location of geographical features.
What does attribute refer to in GIS?
Refers to the characteristics of geographical features stored in the form of graphs and tables.
Fill in the blank: Buffering can enhance safety and security by helping to prevent _______.
unauthorized access.
True or False: Buffering can only be achieved through landscaping.
False.
What is vector data?
The representation of an area using points, lines, polygons.
Vector data is often used to create topographical maps.
What is raster data?
The representation of an area using grid cells or pixels.
Raster data is typically small in size, allowing for easier visualization.
What are sources of information for GIS?
Sources include:
* Remote sensing
* Survey data
* Measure data
* Other maps
Each source provides different types of data crucial for geographic analysis.
What type of data does remote sensing provide?
Aerial photographs and satellite images.
Remote sensing allows for the collection of data over large areas.
What does survey data include?
Data on roads, railways, altitude.
Survey data provides essential information for infrastructure and topography.
What types of measurements are included in measure data?
Rainfall, temperature, air pressure.
Measure data is important for environmental and meteorological studies.
What is the difference between active and passive remote sensing?
Passive uses laser; active uses light.
This distinction affects how data is collected and the type of information gathered.
What is primary data?
First-hand observation and measurement.
Examples include surveying, tests, sketch maps, and measurements.
What is secondary data?
Existing data captured and measured by other organizations.
Examples include topographic maps, satellite images, models, and newspaper articles.
