ELEMENTS OF REMOTE SENSING QUIZ

Spatial variation in horizontal and vertical directions is caused due to:

Physical weathering of rocks

Biological weathering of rocks

Chemical weathering of rocks

All of these

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Which one of the following statement is incorrect regarding the electromagnetic radiation?

The changing electric fields induce the changing magnetic fields in the surrounding medium

These are produced by the motion of electric charge

None of these

The oscillation of charged particles sets up changing electric fields

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Who coined the term, ‘Remote sensing’.

Wilbur Wright, an Italian scientist

Evelyn L. Pruitt, a geographer

Gaspard Felix Tournachon, a French scientist

None of these

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In case of reflection and refraction of electromagnetic radiation,

Angle of incidence = angle of refraction

Angle of incidence = angle of reflection

All listed here

Angle of refraction = sum of the angles of incidence and refraction

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Which one of the following statement is correct?

All of these

The rate of transfer of radiant energy is called flux and is expressed in watts

Radiant energy expressed in Joules, is the energy associated with electromagnetic radiation

The radiant energy which falls upon a surface is termed as irradiance

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Crop Acreage and Production Estimation (CAPE) was funded and taken up in 1983 by:

USA

European Union

India

Russia

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‘A’ and ‘B’ are two towers of equal height diametrically opposite on either side of the nadir point, at 3 km and 5 km distances. Which one of the following statements is correct?

Height displacement of A and B will be towards each other

Height displacement of A and B is equal

Height displacement of A will be less than that of B

Height displacement of B will be less than that of A

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The most widely used antenna in GPS is

Horn antenna

Slotted antenna

Parabolic antenna

Microstrip antenna

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The various stages occuring in GPS system are described below: 1. Generation of an output to the user 2. Detection of the GPS signals 3. Processing the data in the built-in-computer 4. Decoding the GPS signal. The correct sequence of the stages is:

2, 3, 4, 1

1, 2, 3, 4

3, 1, 2, 4

2, 4, 3, 1

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Repetitive observations of the same area at equal interval of time are useful to monitor the dynamic phenomena:

Cloud evolution

Vegetative cover

Snow cover

All of these

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