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How does increase in confinding pressure affect a rocks melting temperature?
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Is the temperature of the outer core higher OR lower than its melting point?
The outer core is liquid. Its pressure is low enough and its temperature high enough for it to melt. The inner core is solid. Both its pressure and temperature are higher than the outer core, but the increased pressure overwhelms the increased temperature, keeping the inner core from melting.
Why Iodine melting point is above room temperature?
Iodine melting point is above room temperature because its vapor pressure is less than one atmosphere.
What is the Kelvin temperature of a substance directly proportional to?
There is no simple answer to how temperature is defined at the microscopic level. However, though this is not entirely accurate, it helps to think of temperature as the average kinetic energy of the particles.
Why is mercury a liquid at room temperature and pressure?
Because mercury has an extremely low melting point. It is the only liquid metal at room temperature.
Does there occur any change in melting point of ice by variation of pressure?
Yes, increase in pressure causes the freezing point to drop.
Which two factors affect the temperature that rocks melt at?
The two main factors that affect the temperature at which rocks melt are the composition of the rock and the pressure acting on it. Different minerals have different melting points, so the composition of the rock will determine its melting temperature. Additionally, pressure can increase or decrease the melting temperature of rocks, with higher pressure generally increasing melting temperature and lower pressure decreasing it.
How does pressure determine whether the mantle is solid or liquid?
The melting temperature of materials is affected by their confining pressure. The higher the pressure the higher the melting temperature. As such as you move deeper into the mantle, the tempraeture will increase, but because of the overlying material so to will the confining pressure which drives up the melting temperature. When high temperature mantle material moves nearer to the surface such as near a mid-ocean-ridge the confining pressure falls faster than the materials temperature and this can cause the melting point to drop below the temperature of the material leading to melting.
Does an increase in pressure results in a higher melting temperature of a dry substance?
yes because it stays together
How can a rock that is above its melting temperature remain solid?
It can't. You can increase the melting point of a particular rock by placing it under a great deal of pressure however.
Does an increase in pressure make magma cool?
Pressure does not change the temperature of rocks, but it does change the melting point. A rock that is under a lot of pressure, even if it is very hot, will stay solid, even if that same rock at the same temperature under lower pressure would be melted. This happens because intense pressure can hold the structure of the minerals together more easily, in a more solid form.So, with an increase in pressure, the melting point of a rock also increases.
When pressure on a piece ice is increased its melting point will be?
The melting point of ice actually DECREASES with an INCREASE in pressure.
How does water affect the melting temperature of rock?
In theory yes: increasing pressure will increase the melting point mostly (not for ice!). In practice: it is hardly noticable, not significant at all, for most solid materials.Pressure increases the melting point of rock. The molecules are packed tighter together and thus take more energy to liquefy.
How can liquid be turned into a solid?
the solid must reach its melting point which varies with every substance
When solid changes to liquid rise in temperature or drop in temperature?
Melting need an increase of the temperature.
What are the factors that affect the formation of magma?
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.
How long does melting take?
It depends at the rate of temperature increase
Is pressure a contributor to a rock's melting temperature?
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