Samacheer Kalvi 12th Geography – Chapter 6 Geoinformatics Book Back Answers:

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12th Samacheer Books Geography Book Back Answers PDF:

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12th Samacheer Kalvi Geography – Geoinformatics Book Back Answers :

I. Choose the correct answer:

1. Which one is wrongly matched?
a) GPS — United States
b) GLONASS — Russia
c) GALILEO — Japan
d) BEODOU — China
e) IRNSS — India

2. GPS uses a constellation of
a) 28 satellites    b) 30 satellites
c) 40 satellites   d) 24 satellites

3. IRNSS provides location information service to users in India and the region extending from the Indian boundary for up to
a) 2300 km   b) 2000 km
c) 1000 km   d) 1,500 km.

4. Match column – A with column – B and answer using the codes given. A B
a) First Generation i) Vacuum Tubes
b) Second Generation ii) Transistors
c) Third Generation iii) Integrated Circuits
d) Fourth Generation iv) Microprocessors
e) Fifth Generation v) Artificial Intelligence Codes:
1     2    3      4     5
a) i)  ii)  iii)  iv)  v)
b) ii)  i)   iii)     v)    iv)
c) iv) iii)  v)      ii)     i)
d) iii) ii)   i)      iv)    v)
e) v)  iv)  iii)     ii)     i)

5. Which one of the following is not the field of geology remote sensing techniques used in?
a) Lithological mapping       b) Structural mapping
c) wildlife exploration   d) Hydrocarbon exploration

6. Which one of the following is sun-synchronous satellite?
a) NOAA SEASAT     b) TIROS
c) SKYLAB                 d) METEOSAT

7. The wavelengths of the active remote sensing are longer than 1 mm whereas the passive remote sensing, the wavelength range from
a) 0.4 to 1.0 mm   b) 0.8 to 2.0mm
c) 0.2 to 1.0 mm        d) 0.6 to 0.4 mm

8. Which of the following is the fastest computer in the world?
a) Sunway TaihuLight  b) Summit
c) Pratyush                     d) Param 10000

9. GNSS satellites’ orbit situated about km above the earth’s surface
a) 1500 km    b) 2000 km
c) 1000 km    d) 2200 km

10. Which one of the following is a geosynchronous satellite?
a) INTELSAT    b) Corona
c) MIDAS          d) SAMOS

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