Need help on the question below...I know it is not C or D
The formation of metamorphic rocks depends on all of the following except
a. the composition of parent rocks
b. Earth's magnetic field
c. temperature
d. pressure
Thanks
Pressure is he best answer.
I disagree with your answer although I'm certainly no expert on rocks/geology processes, etc. Pressure is a very real part of metamorphic rock formation.
See http://en.wikipedia.org/wiki/Metamorphic_rock
I can remove your answer if you wish.
To determine which of the given options does not affect the formation of metamorphic rocks, we need to analyze each option individually.
a. The composition of parent rocks: This is one of the key factors that determine the type of metamorphic rock that will be formed. So, this option affects the formation of metamorphic rocks.
b. Earth's magnetic field: The Earth's magnetic field does not have any significant effect on the formation of metamorphic rocks. Magnetic fields primarily influence the movement of charged particles such as electrons and ions, rather than rock formation.
c. Temperature: Temperature plays a crucial role in the formation of metamorphic rocks. An increase in temperature can cause changes in the mineral composition and structure of rocks, leading to the formation of new minerals and metamorphic rocks.
d. Pressure: Pressure, along with temperature, is a critical factor in the formation of metamorphic rocks. Higher pressure can cause rocks to undergo recrystallization and form metamorphic rocks.
From the analysis above, we can conclude that the correct answer is b. Earth's magnetic field.
To determine which of the given options is the correct answer, we need to identify the factor that does NOT affect the formation of metamorphic rocks. Let's go through each of the options:
a. The composition of parent rocks: This is a key factor that determines the type of metamorphic rock that will form. The minerals present in the parent rocks influence the minerals that develop during metamorphism. Therefore, option a is relevant to the formation of metamorphic rocks.
b. Earth's magnetic field: The Earth's magnetic field does not directly impact the formation of metamorphic rocks. Metamorphism is mainly driven by heat and pressure, which are not influenced by the Earth's magnetic field. Therefore, we can eliminate option b.
c. Temperature: Temperature is one of the main factors contributing to the formation of metamorphic rocks. During metamorphism, heat affects the minerals present in the rock and can cause changes in their structure and composition. Therefore, option c is relevant to the formation of metamorphic rocks.
d. Pressure: Similar to temperature, pressure is another crucial factor in the formation of metamorphic rocks. High pressure changes the mineral arrangement and composition, leading to the formation of metamorphic rocks. Therefore, option d is relevant to the formation of metamorphic rocks.
After evaluating all the options, the correct answer is b. Earth's magnetic field. This option does not affect the formation of metamorphic rocks.