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1. a decrease in pressure, which lowers the melting temperatures of materials; this occur at mid-ocean ridges.
2. an increase in pressure, which causes materials in the asthenosphere to melt; this often occurs at a hot spot.
3. an increase in the amount of water in the asthenosphere, which lowers the melting temperatures of materials; this often occurs at subduction boundaries.
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How are intrusive rocks formed and what factors contribute to their formation?
Intrusive rocks are formed when molten magma cools and solidifies beneath the Earth's surface. Factors that contribute to their formation include the composition of the magma, the depth at which it solidifies, and the rate at which it cools.
What factors affect lava formation?
Lava formation is primarily influenced by temperature, pressure, composition of the magma, and the presence of volatiles such as water and gases. The temperature determines the viscosity of the magma, while pressure affects the magma's ability to rise to the surface. Composition determines the type of lava flow produced, whether it be mafic, intermediate, or felsic. The presence of volatiles can lead to explosive eruptions by contributing to increased pressure within the magma chamber.
What are the critical factors that affect cocoon formation?
Climate, silent and sanitary environment, and enough food for the worms are some critical factors that affect the cocoon formation.
What are the 3 main factors that affect precipitation?
The three main factors that affect precipitation are air pressure, temperature, and humidity. Changes in these factors can impact the formation and distribution of clouds and ultimately influence when and where precipitation will occur.
What is the process called for mineral formation from magma?
The process is called crystallization. It involves the cooling and solidification of magma, leading to the formation of minerals as atoms within the magma arrange themselves into a crystalline structure.
What are the three factors affect the formation of magma?
Temperature Pressure Compostition
Which of the following does not affect the formation of magma a.temperature b.pressure c.volume d.mineral composition?
Volume does not directly affect the formation of magma. Temperature, pressure, and mineral composition are the key factors that influence magma formation.
What does not affect the formation of Magma?
Star Wars Movies do not affect the formation of magma.
What three factors affect the formation of magma?
Three factors that affect the formation of magma are temperature, pressure, and the presence of volatiles (such as water and carbon dioxide). Increasing temperature, decreasing pressure, and the addition of volatiles all contribute to the melting of rocks and the formation of magma beneath the Earth's surface.
Four factors involved in the formation of magma?
The four factors involved in the formation of magma are temperature (heat), pressure, composition of the rock, and the presence of water or volatile substances. When these factors change, it can lead to the melting of rocks and the formation of magma beneath the Earth's surface.
How does the pH of magma affect the formation of igneous rocks?
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What does NOT play a role in magma formation?
One factor that does not play a role in magma formation is the Earth's rotation. Magma formation is primarily influenced by factors such as temperature, pressure, composition of the rock, and the presence of volatiles (such as water and gases) in the mantle.
How are intrusive rocks formed and what factors contribute to their formation?
Intrusive rocks are formed when molten magma cools and solidifies beneath the Earth's surface. Factors that contribute to their formation include the composition of the magma, the depth at which it solidifies, and the rate at which it cools.
What are the three factors that promote the formation of magma?
High temperatures, decreased pressure and the presence of volatiles.
What factors affect lava formation?
Lava formation is primarily influenced by temperature, pressure, composition of the magma, and the presence of volatiles such as water and gases. The temperature determines the viscosity of the magma, while pressure affects the magma's ability to rise to the surface. Composition determines the type of lava flow produced, whether it be mafic, intermediate, or felsic. The presence of volatiles can lead to explosive eruptions by contributing to increased pressure within the magma chamber.
What does not affect the viscosity of magma amount of gases silica content temperature all of these affect the viscosity of a magma?
All of these factors affect the viscosity of magma. The amount of gases can influence the fluidity, while the silica content directly impacts thickness, and temperature affects the overall mobility of the magma. Therefore, none of these factors can be excluded as they all play a role in determining viscosity.
What are the two important factors that affect the explosiveness of a volcanic eruption?
Pressure and magma
