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Why do mantle convection currents rise under mid ocean ridges?
They don't. The presence of magma at mid-ocean ridges is due to the effect of less pressure on the mantle below known as "decompressional melting". Mantle rock is extremely hot, yet it remains in solid state because it is under immense pressure. At mid-ocean ridges, where tectonic plates are pulling apart, the crust is thinner, meaning less pressure on the mantle rocks below, thus they are able to melt, become less dense and rise.
What minerals are in the upper mantle?
The upper mantle is mainly composed of minerals such as olivine, pyroxene, and garnet. These minerals form under high temperature and pressure conditions in the Earth's interior, contributing to the solid composition of the upper mantle.
What is the state of matter in the upper mantle?
solid
Which personality trait may help predict how someone would emotionally react under pressure?
Adjustment - The adjustment personality dimension
What are molten material in the mantle?
Yes. The mantle is composed of the plastic mantle, or the upper part, which is partially molten. The stiffer mantle is under it. it is not as molten
How would the earth's mantle react under gentle continuous pressure?
it will steady as liquid form and hot
How would the mantle behave when there is a gentle continious pressure?
Under gentle continuous pressure, the mantle would slowly deform and flow over long periods of time. This gradual movement of the mantle is known as mantle convection, where warmer, less dense rock rises and cooler, denser rock sinks, driving the slow movements of tectonic plates on Earth's surface.
Why is the lower mantle denser the the upper mantle?
The lower mantle is under greater pressure than the upper mantle, compressing the rock into a denser form.
Is the mantle porous?
No. The mantle is under such great pressure that any pore space would close immediately.
Why is gentle pressure applied in using orange woodstick?
Gentle pressure is applied when using an orange woodstick to push back cuticles or clean under the nails to avoid causing damage to the skin and nails. Excessive pressure can lead to injury or infection. The goal is to be gentle and precise in order to maintain the health and integrity of the cuticles and nails.
What layers make up the mantle?
The mantle consists of two main layers: the upper mantle and the lower mantle. The upper mantle is composed of solid rock that can flow slowly over time. The lower mantle is composed of solid rock under high pressure and temperature conditions.
What is the gemstone which is formed under extreme pressure?
Diamond is the gemstone that is formed under extreme pressure deep within the Earth's mantle. The intense heat and pressure cause carbon atoms to crystallize into diamond over millions of years.
Why do mantle convection currents rise under mid ocean ridges?
They don't. The presence of magma at mid-ocean ridges is due to the effect of less pressure on the mantle below known as "decompressional melting". Mantle rock is extremely hot, yet it remains in solid state because it is under immense pressure. At mid-ocean ridges, where tectonic plates are pulling apart, the crust is thinner, meaning less pressure on the mantle rocks below, thus they are able to melt, become less dense and rise.
What is the range temperature within the stiffer mantle?
The temperature range within the stiffer mantle is between 500 and 900 degrees Celsius. This region is known as the upper mantle and is composed of solid rock that can deform under high pressure and temperature.
What minerals are in the upper mantle?
The upper mantle is mainly composed of minerals such as olivine, pyroxene, and garnet. These minerals form under high temperature and pressure conditions in the Earth's interior, contributing to the solid composition of the upper mantle.
Where is the lower mantle?
under the upper mantle
How does the outer mantle differ from the inner mantle?
The outer mantle is part of the Earth's mantle that is closer to the surface, while the inner mantle is deeper within the Earth. The outer mantle is composed of solid rock that can flow slowly over geologic time, while the inner mantle is under higher pressure and temperature, making it more solid and rigid.
