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Devin
RafaMelting water can weather a rock through a process called frost wedging, where water seeps into cracks in the rock, freezes and expands, causing the crack to widen. This cycle of freezing and thawing can break apart rocks over time. Additionally, the flowing water can chemically weather the rock by dissolving minerals and carrying them away.
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How does the presence of water affect the melting temperature of a rock?
The presence of water can lower the melting temperature of a rock by facilitating the movement of ions and promoting the process of melting. Water reduces the viscosity of molten rock, making it easier for the rock to melt at lower temperatures.
What happens when water is added to rock in the mantle?
When water is added to rock in the mantle, a process called hydration occurs where the water reacts with the minerals in the rock to form new minerals. This can lead to changes in the rock's composition, structure, and physical properties. Additionally, the presence of water can lower the melting point of the rock, potentially leading to the formation of magma through partial melting.
What affect does the presence of water have on the melting temperature of a rock?
The presence of water can lower the melting temperature of a rock by facilitating the transfer of heat and promoting the formation of liquid magma. Water can act as a flux, which helps to break chemical bonds in the rock and decrease its melting point. This process is commonly seen in the formation of magmas in subduction zones and other tectonically active regions.
Can A wet rock generally melts at a lower temperature than a dry rock?
Yes, a wet rock generally melts at a lower temperature than a dry rock because the presence of water decreases the melting point of the rock. Water acts as a solvent, facilitating the movement of ions and reducing the energy required for melting to occur.
The melting of metamorphic or igneous rock forms what substance?
The melting of metamorphic or igneous rock forms magma, which can eventually cool and solidify to form igneous rock.
