Which is the correct fact about Remote Sensinga.Remote Sensing does not have any physical contact with earthb.Remote Sensing detectors are attached to satellites or aircraftsc.Remote Sensing cannot be used to give real time notifications unlike ENVISd.It monitors the energy reflected from the earth

Satellite remote sensing is the gathering of data from Earth’s surface using satellites which orbit around Earth. This remote sensing is done using two different methods: passive and active sensor systems.What is the difference between passive sensor systems and active sensor systems?aActive sensor systems emit their own radiation toward the target. Passive sensor systems detect naturally occurring radiation from a target. bActive sensor systems detect naturally emitted radiation from a target. Passive sensor systems detect naturally reflected radiation from a target.cPassive sensors reflect solar energy and direct it toward the target, which reflects this energy back. Active sensors absorb solar energy emitted by a target. dPassive sensors detect solar energy and can be used day or night. Active sensors emit electromagnetic radiation and can be used during daylight hours only.

Satellites can detect radiation the Earth reflects from the sun and radiation the Earth emits.TrueFalse

Remote sensing uses which of the following waves in its procedureQuestion 1AnswerA.Electric fieldB.Electro-magnetic wavesC.Gamma-raysD.Solar waves

Which is the satellite Terra able to do?A.Monitor seismic activity on the moonB.Monitor the movement of comets and meteoritesC.Monitor the orbit of MarsD.Monitor volcanic eruptions on EarthSUBMITarrow_backPREVIOUS

What are the two sources of energy in remote sensingQuestion 4AnswerA.Electromagnetic radiation and radarB.Active and passiveC.Passive and radar