Answer: It is a scanning of an high-flying aircraft or a satellite to obtain information. Three tools that can be used is infra-red, cameras, and air photography.
- Cameras on satellites and airplanes take images of large areas on the Earth’s surface, allowing us to see much more than we can standing on the ground.
- Sonar systems on ships can be used to create images of the ocean floor without needing to travel to the bottom of the ocean.
- Cameras on satellites can be used to make images of temperature changes in the oceans.