How Remote Sensing Works (Grade 10 NSC Matric Geography): Flashcards
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Remote sensing definition
Remote sensing definition
Gathering Earth surface info without direct contact
Remote sensing detects
Remote sensing detects
Electromagnetic radiation from Earth's surface
Passive remote sensing
Passive remote sensing
Records natural energy, sends no signals itself
Active remote sensing
Active remote sensing
Sends own energy signal, records what bounces back
RADAR acronym
RADAR acronym
Radio Detection And Ranging
Radar key advantage
Radar key advantage
Penetrates clouds, rain, and vegetation
GEO satellites feature
GEO satellites feature
Stay fixed above same Earth point, continuous coverage
LEO satellites feature
LEO satellites feature
Move around Earth, provide high-resolution images
Infrared radiation
Infrared radiation
Heat energy we feel but cannot see
Visible light
Visible light
What our eyes see, like rainbow colours