1. 1.4 Technology is used to map earth.

2. 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.

3. 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.

4. 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.

5. 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.

6. False-color image of snowstorms

7. 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.