Task 2. Read. Write and Translate Read and Reply the teacher. Then give short answers to the following questions. er Directions: Students are required to read aloud the whole text afte a) How does remote sensing acquire information of an object? By the use of either recording or real-time sensing device that is not in physical or intimate contact with the object. b) How many kinds of remote sensing are there? What are the differences There are two: passive and active sensors. Passive sensors detect natural energy that is em itted or reflected by the object or surrounding being observed, while the active sensors emit energy to and receive it from the target c)What advantages does remote sensing bring us? Remote sensing brings us a lot advantages in many fields, such as monitoring deforestation, the effect of global warming, depth sounding of ocean depth, military affairs, national defence amd natural resource management 、2022P6
2021/2/20 P.6 Read and Reply Directions:Students are required to read aloud the whole text after the teacher. Then give short answers to the following questions: a) How does remote sensing acquire information of an object? b) How many kinds of remote sensing are there? What are the differences? Task 2: Read, Write and Translate By the use of either recording or real-time sensing device that is not in physical or intimate contact with the object. There are two: passive and active sensors. Passive sensors detect natural energy that is emitted or reflected by the object or surrounding being observed, while the active sensors emit energy to and receive it from the target. Remote sensing brings us a lot advantages in many fields, such as monitoring deforestation, the effect of global warming, depth sounding of ocean depth, military affairs, national defence amd natural resource management. c) What advantages does remote sensing bring us?
Read and Judge (F 1)By means of physical or intimate contact with an object, remote sensing can acquire information of it T)2 Remote sensing applications can benefit us a lot in many respects, such as monitoring deforestation, the effect of global warming and depth sounding of ocean depths (F )3) Radar is an example of active remote sensing which cannot be used to establish the location, height, speed and direction of an object. (T)4)Nowadays, remote sensing is very useful in military affairs and national security. (T)5 Film photography, infred, charge-coupled devices and radio meters are all passive sensors. assive sensors 2021/2/20 P7 End
2021/2/20 P.7 ( )1) By means of physical or intimate contact with an object, remote sensing can acquire information of it. ( )2)Remote sensing applications can benefit us a lot in many respects, such as monitoring deforestation,the effect of global warming and depth sounding of ocean depths. ( )3) Radar is an example of active remote sensing which cannot be used to establish the location, height, speed and direction of an object. ( )4) Nowadays, remote sensing is very useful in military affairs and national security. ( )5) Film photography, infred,charge-coupled devices and radiometers are all passive sensors.assive sensors . Read and Judge End F T F T T