Question

After energy has been emitted by the target, the sensor collects and records the _____.

• A. Sunrays
• B. Objects on Earth
• C. Electromagnetic radiation
• D. None of these

Answer 1

Answer: (C)

Electromagnetic radiation

• Once the energy makes its way to the target through the atmosphere, it interacts with the target depending on the properties of both the target and the radiation.
  
• After the energy has been scattered by, or emitted from the target, we require a sensor (remote - not in contact with the target) to collect and record the electromagnetic radiation.