1.4 Technology is used to map earth.

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Presentation transcript:

1.4 Technology is used to map earth.

Remote sensing provides detailed images Remote sensing: is the use of scientific equipment to gather information from a distance. Ex: camera mounted on an airplane or a satellite orbiting Earth.

Remote sensing provides detailed images Airplane cameras use film to record data, but satellites use sensors to build images of Earth. A sensor: device receiving a signal. Satellite signals can detect more than what your eye can see.

Remote sensing provides detailed images Satellite sensors retrieve different energy coming from Earth’s surface. Satellites send the information to computers on Earth. Computers turn this information into images.

Remote sensing provides detailed images False-color images: used to study changes in the Earth. Earth’s natural colors are replaced with artificial ones to highlight special features.

False-color image of snowstorms

Geographic information systems display data in layers. Geographic information systems (GIS): computer systems that store and arrange geographic data to display the data in many different maps. GIS is used by scientists, city planners, and engineers. Why would knowing where the customers located benefit someone.