1-What are the most important factors for forming a mineral? 2-Consider a magma
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Question
1-What are the most important factors for forming a mineral?
2-Consider a magma chamber that has solidified. It is now _________________.
3-What happens at convergent plate boundaries resulting in the melting of rocks?
4-What happens at divergent plate boundaries resulting in the melting of rocks?
5-All solar systems start out the same way. They begin in a cloud of gas and dust called______________.
6-If water is introduced into the mantle at subduction zones, what aect does it have on rock melting properties?
7-What are ways that can lower the viscosity of magma?
8-Which tectonic plate boundary type is associated w/ the process resulting in the “ring of fire”?
Explanation / Answer
1-What are the most important factors for forming a mineral?
The most important factors for forming a mineral are physical and chemical factors such as temperature, pressure, presence of water, pH, and amount of oxygen available.
Time is also one of the most important factor as it takes time for atoms to become ordered. In limited time, the mineral grains will remain very small.
Water is also a factor as presence of water enhances the mobility of ions that lead to the formation of larger crystals over shorter time periods.
2-Consider a magma chamber that has solidified. It is now _________________.
Over millions of years magma chambers has solidified to form a pluton or large igneous intrusion.
3-What happens at convergent plate boundaries resulting in the melting of rocks?
Magma chambers are produced at convergent plate boundaries resulting in the melting of rocks and resulting magma is lower in density than the surrounding rock material.
4-What happens at divergent plate boundaries resulting in the melting of rocks?
At divergent plate boundaries, extensional forces stretch the lithosphere that forms a deep fissure and when the fissure opens, pressure is reduced on the super-heated mantle material. By melting, the new magma flows into the fissure and then solidifies and the process repeats itself
5-All solar systems start out the same way. They begin in a cloud of gas and dust called______________.
All solar systems start out the same way from a giant, rotating cloud of gas and dust called as the solar nebula.
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