Minerals make up most of the rocks on Earth's surface. What are three changes that can cause minerals to form by metamorphism?
pressure, temperature, melting
temperature, melting, physical makeup
temperature, pressure, chemical makeup
pressure, physical makeup, melting
I think the answer is ethier A or C.
C
http://en.wikipedia.org/wiki/Metamorphic_rock
this is for grade 5? connexus?
You are correct! The answer is C: temperature, pressure, and chemical makeup.
Metamorphism refers to the changes that occur in minerals and rocks when they are subjected to heat, pressure, and chemical reactions. These changes can result in the formation of new minerals or the modification of existing ones.
To determine the correct answer, let's break down the options:
Option A: pressure, temperature, melting
While pressure and temperature are correct factors contributing to metamorphism, melting is not typically associated with the process. In metamorphism, minerals undergo changes without melting into a liquid state.
Option B: temperature, melting, physical makeup
Again, temperature is correct, and changing physical makeup could be a result of metamorphism. However, melting is not typically considered a primary factor in metamorphic processes.
Option C: temperature, pressure, chemical makeup
This answer is correct. Temperature and pressure are crucial factors in metamorphism. Additionally, changes in the chemical makeup of the minerals and rocks also occur, leading to the formation of new minerals or the transformation of existing ones.
Option D: pressure, physical makeup, melting
Although pressure and physical makeup can influence metamorphism, melting is not typically part of the process.
Therefore, the correct answer is C: temperature, pressure, and chemical makeup.