Introduction to GIS

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Questions and Answers

GIS – What is it. No simple ______ anymore

definition

GIS – what’s in the S. – ______: the technology – Science: the concepts and theory – Studies: the societal context

Systems

Geographic/Geospatial Information Information about ______ on earth’s surface

places

A GI System is a computer based system which includes software, hardware, ______ and the geographic information

<p>people</p> Signup and view all the answers

A GIS System can be used to create, edit, query, ______ and display geographic information

<p>analyse</p> Signup and view all the answers

What is remote sensing?

<p>Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object, in contrast to in situ or on-site observation.</p> Signup and view all the answers

In what fields is remote sensing used?

<p>Remote sensing is used in numerous fields, including geophysics, geography, land surveying, Earth science disciplines, military, intelligence, commercial, economic, planning, and humanitarian applications, among others.</p> Signup and view all the answers

How is remote sensing generally used to detect and classify objects on Earth?

<p>Remote sensing generally refers to the use of satellite- or aircraft-based sensor technologies to detect and classify objects on Earth. It includes the surface and the atmosphere and oceans, based on propagated signals (e.g. electromagnetic radiation).</p> Signup and view all the answers

What are the two main types of remote sensing?

<p>Remote sensing may be split into 'active' remote sensing (when a signal is emitted by a satellite or aircraft to the object) and 'passive' remote sensing (when the sensor instrument does not emit any kind of radiation).</p> Signup and view all the answers

Name three Earth science disciplines in which remote sensing is used.

<p>Exploration geophysics, hydrology, ecology, meteorology, oceanography, glaciology, and geology are Earth science disciplines in which remote sensing is used.</p> Signup and view all the answers

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