Question

1 the mantles temperature is hot enough to melt rock, but the weight of the lithosphere keeps the mantle in a semi - solid state. which inference does this evidence support? a pressure and heat have similar effects on solids b pressure raises the melting point of solids c pressure lowers the melting point of solids d pressure has no effect on the melting point of solids

Explanation:

The mantle's temperature is hot enough to melt rock, but the lithosphere's weight (pressure) keeps it semi - solid. This means the pressure from the lithosphere makes the rock need a higher temperature to melt, so pressure raises the melting point of solids. Option A is wrong as pressure and heat have different effects here. Option C is opposite to what's observed. Option D is wrong as pressure clearly has an effect.

Answer:

B. Pressure raises the melting point of solids