Question : The crust is the Earth's outermost layer that is less than _______ per cent of Earth by mass, with oceanic crust and continental crust often consisting of more felsic rocks.
Option 1: 5
Option 2: 1
Option 3: 2
Option 4: 10
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Correct Answer: 1
Solution : The correct option is 1.
Earth's crust is its thick outer layer of rock, accounting for less than 1% of the planet's radius and volume. It is the uppermost layer of the lithosphere, which contains the crust and the upper portion of the mantle.
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Question : Any natural mass of mineral matter that makes up the earth's crust is:
Option 1: garbage
Option 2: rock
Option 3: stone
Option 4: fossil
Question : The layer of Earth that separates the crust from the core is:
Option 1: stratosphere
Option 2: mantle
Option 3: magma layer
Option 4: country
Question : A natural process of mechanical disintegration and/or chemical decomposition of the rocks of the crust of the Earth by certain physical and chemical agencies of the atmosphere is known as
Option 1: solidification of rocks
Option 2: weathering
Option 3: new rock formation
Option 4: watering of rocks
Question : What is the average thickness of the continental crust of the Earth?
Option 1: 300 km
Option 2: 5 km
Option 3: 30 km
Option 4: 2.5 km
Question : Which of the following is the most abundant metal on Earth's crust?
Option 1: Magnesium
Option 2: Iron
Option 3: Copper
Option 4: Aluminium
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