Consider the following statements with refrence to Earth rsquo s crust 1 Crust is a thin shell on th...........

Geography Earth Geology

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Consider the following statements with refrence to Earth’s crust:

1. Crust is a thin shell on the outside of the Earth.

2. Both continental and oceanic crust are more dense than the mantle.

Which of the statements given above is/are correct?

1 only

2 only

Both 1 and 2

Neither 1 Nor 2

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Explanation:

Both continental and oceanic crust are less dense than the mantle below, both types of crust "float" on the mantle. This is isostasy, and it's also one of the reasons continental crust is higher than oceanic: continental is less dense and so "floats" higher. As a result, water pools in above the oceanic crust, forming the oceans.