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21) The density of water is 1 g/cc. This is strictly valid at
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22) Specific gravity is defined as the ratio of
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23) The cause for the Tsunami, as deduced by the seismologists, is
Explanation :
Seismologists say only earthquakes measuring greater than 7.0 on the Richter scale can produce a major tsunami. The friction between two slow-moving plates of the Earth's crust creates vast amounts of seismic energy which is released in the form of an earthquake.
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24) Which statement best describes an igneous intrusion?
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25) Which is a common first indicator of an approaching thunderstorm?
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26) Which of the following is not an intrusive igneous body?
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27) To prevent damage from lightning, lightning conductors are used on tall structures. The lightning conductor
Explanation :
To prevent damage from lightning, lightning conductors are used on tall structures. The lightning conductor should be made of a good conductor like copper with sharp-pointed edges.
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28) The number of waves per second in a sound is called ________ of that sound.
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29) Sound waves do not show the phenomenon of
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30) Speed of sound is maximum in which among the following?
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