the theory of Isostacy is the theory that is used in the movement of the earth,the word itself Isostacy comes from two Greek words:iso meaning equal and Stotikos meaning balance.Therefore Isostacy theory means equal balance or standing.Evidances on the theory of isostacy:presence of Rios and and Esturies in the coastland of Gambia and Sierra leone,Melting of ice sheet and Depression.Effects of the theory of Isostacy:May cause displacement of Lithosphere,Faulting leading to the formation of Block mountains and Rift valleys,foldings,Earth quakes and volcanic eruption.Importances of the theory of isostacy:Understanding the formation of different phenomena,Explain the concept that the crust floats on the mantle,predict future events eg floods,provide precautions to people on the effects of weather.
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There are 1000 milligrams in a gram. If you meant 005g i.e. 5g, then this is 5000mg. if you meant .005g, this is 5mg.
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isostasy
An isostatic is something that pertains to or is characterized by isostasy. Isostasy is the equilibrium of the Earths crust.
Three principal models of isostasy are:The Airy-HeiskanenModel- where different topographic heights are accommodated by changes in crustal thickness, in which the crust has a constant density The Pratt-HayfordModel- where different topographic heights are accommodated by lateral changes in rock density. The Vening Meinesz, or Flexural Model- where the lithosphere acts as an elastic plate and its inherent rigidity distributes local topographic loads over a broad region by bending.
The balance between gravity and buoyancy is called equilibrium.
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strength and weaknesses of isostasy
isostasy
everything on the crust is in a state of balance
Gravity.
Isostasy itself isn't a type of stress. Restoring isostasy, however, puts stress on the crust. Allow me to explain: Isostasy is the process of the earth's crust floating on the mantle. When the crust suddenly gets heavier (this happens during an ice age close to the poles, the weight of the ice pushing the crust down), the crust will sink deeper into the mantle. This process is called "restoring the isostasy". The isostasy is reached when the upward force from the mantle (the buoyant force) and the downward force from the crust (gravity) are in balance again. When an ice age ends, the isostasy will be disrupted again, because all the weight of the ice on the crust will be gone. The crust will start to rise again, using the same forces as before, but in a reverse way. This process is still going on in Scandinavia, where the crust is still lifting up from the last ice age. As with all geological processes, restoring isostasy isn't fast: it can take thousands of years to restore the isostasy. Analog to the isostacy (but a lot quicker), is when you push down an icecube in a glass of water. The icecube will get lower into the water, as you push it down. but it will push back, because it's lighter then the water, and the buoyant force tries to make it float as good as possible. When it doesn't move anymore, it means the buoyant force and the force you are applying with your finger are in balance, and isostasy is reached.
Isostasy. This is the balance between the weight of the Earth's crust and the buoyant force exerted by the mantle beneath it, ensuring that the crust remains in a state of equilibrium.
Isostasy can cause continental uplift or subsidence depending on changes in crustal thickness and density. When weight is added to the crust, such as by mountain building or erosion, the crust can adjust by uplifting or sinking to maintain gravitational equilibrium. This vertical movement of the crust due to isostasy is known as isostatic rebound or isostatic subsidence.