Formation of the Earth — Important Questions
ICSE · Class 11 · Geography
65 important questions from Formation of the Earth for ICSE Class 11 Geography, with answers. Part of the ICSE Class 11 Geography syllabus.
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Important Questions from Formation of the Earth
At what rate is the moon moving away from the earth?
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13 cm per year
Scientific study of tides and rotation of the earth shows that the moon is moving away at 13 cm per year.
What age of the earth is obtained from the second tidal method?
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4 billion years
On the basis of the second tidal method, the age of the earth is determined at 4 billion years.
Which formula is used for the sedimentation method of estimating the age of the earth?
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Age of the earth = Thickness of sediment / Annual rate of deposit of sediment
The sedimentation method uses the thickness of sediment divided by the annual rate of deposit of sediment.
What age of sedimentary rocks is calculated by the sedimentation method?
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4 billion years
The age of the sedimentary rocks has been calculated as 4 billion years on this basis.
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