Which is the satellite used for understanding about weather conditions?
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In the choice box experiment the cockroach prefers …………………. conditions. i) Dark conditions ii) Light conditions
Correct option is B) i and iv
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Motion of a rocket: (a) :: Motion of a satellite around the earth: (b)
B) (a) = non – uniform; (b) = uniform
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Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following:
(D) Flaccidity of bulliform cells Grass leaves curl inwards to the minimize water loss.
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Relation between time period of a satellite and radius of the planet …………………. A) T^2 ∝ R^3
Correct option is A) T2 ∝ R3
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The time period of a satellite (T) moving around the earth surface depends on
D) radius of the earth
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A person sitting in a satellite feels weightlessness because A) the earth does not attract the objects in a satellite.
C) the normal force is zero
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Match the following: 1. Hazard a) forecasting weather
1. c 2. e 3. d 4. b 5. a
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Which of the gas is the most unsuitable for filling up weather observation balloons ?
Correct Answer - D Argon is unsuitable for filling up weather observation balloons because it is heavier than air.
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A transponder is a satellite equipment which (a) Receives the signal from earth station and amplifies it
Correct option: (d) All of the above
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They could not reach the station in time since the weather was extremely rough. (Simple)
The weather being extremely rough, they could not reach the station in time. Or, They could not reach the station in time for the extremely rough weather.
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