Which phrase gives two processes scientists think move the Earth's lithospheric plates?

Geography

1 answer:

hammer [34]3 years ago

7 0

Convection in the mantle and pressure of magma on the edge of the plate

Explanation:

Convection currents occur in the mantle because the upper mantle (asthenosphere) is generally cooler than the lower mantle. The convections apply upward pressure on the lower edges on the lithosphere as the melted rocks upwell from below. The lithosphere deflects the convections and as the convections churn clockwise of anticlockwise, they drag the lithosphere with it via friction. This is what is stipulated to cause tectonic plate movements.

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How do I find the area of these?

crimeas [40]

Answer:

For b. 11*3x = 33x

For c. (3x-4)(11x-2) = $33x^{2} -50x+8$

Explanation:

For b. Since it is a rectangular the A = l*w

w = 11 & l = 3x => A = 11*3x = 33x

For c. Since it is a square we could assume that the A = $s^{2}$ a side squared (since they all have the same length) but to be on the safe side, we'll assume it is not a square and do the math of multiplying one side by another (just like for a rectangle)