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What is the composition of the crust under the continents How do we know?
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Why do scientists only have theories about the composition of the mantle and core but they know the exact composition of the crust?
The Earth's Crust is what we stand on, so it's within easy reach of scientists. The mantle and core, by contrast, are deeper inside the planet, where no drill or human being can reach.This means that we must learn about the mantle and core of our planet with less direct methods. We have a pretty good idea of the composition and density of the Earth's mantle and core by studying the effects of earthquakes, by measuring the behavior of earthquake waves as they travel through the Earth.
Why is it necessary to think about the different layers of the Earth in terms of both their composition and their physical properties?
There's different layers when you define them differently, for example, when you define under physical you have the - lithosphere - asthenosphere -mesosphere - cores ( outer and inner cores ) and under compositionall you have - crust - mantle (split into several categories) - inner core - outer core you're going to miss vital information if you define it just one way, for example - if you define using composition, you will not know that the core is both liquid and solid, etc.
What is the chemical composition of the secretion which come from under the armpit?
Why would anyone want to know the chemical composition of armpit sweat? There is no one answer because sweat is basically pee coming out of your skin. It is a liquid that removes the toxins from your body, so depending on what toxins are in your body, the chemical composition of your sweat changes.
Which type of crust is thicker oceanic crust or continental crust?
I think it is the continental crust
How do scientists know that the continents were a big land mass?
If you are referring to Pangea, the theorized land mass that all continents were once part of, they know this because of the continents' puzzle like features, because things most likely exploded apart, causing the seemingly random shapes of the shores of the continents.
What is the composition of the crust under the continents How do you know?
Continental crust is generally high in silica. You may also know that the crust is likely to be made of granite. Hope that helped ;)
What do we know about what it looks like beneath the earth's crust?
You will never know what it look like under the earth's crust :)
What is a good sentence for continental drift?
The term 'continental crust' is a compound noun, a word for therelatively thick part of the earth's crust that forms the large landmasses. A noun functions in a sentence as the subject of a sentence or a clause, and as the object of a verb or a preposition. Examples:Bobby has no idea what a continental crust is. I explained to him that continental crust is land (territory).
I know there is water under land But what is under water?
If we look beneath water, no matter how deep, we will always find the rock of the crust of the earth. You might have heard the term "ball of rock" applied to the earth, and the crust is the outer covering of that ball of rock. All of the world's oceans sit on top of the crust of the earth.
What do the continents lie on?
My year 7 Geography teacher told mt that under the continents there is a substance like a soild-liquid. It is soild under preaseure and it the preasure is released then it turns to a liquid.I don't know for sure, because I am twelve, but I would think that currently this solid-liquid would be a soilid because the average specific gravity of continents is 2.7 and once a gain, I don't know if that is heavy and putting alot of preassure on this solid-liquid or not.
Why do scientists only have theories about the composition of the mantle and core but they know the exact composition of the crust?
The Earth's Crust is what we stand on, so it's within easy reach of scientists. The mantle and core, by contrast, are deeper inside the planet, where no drill or human being can reach.This means that we must learn about the mantle and core of our planet with less direct methods. We have a pretty good idea of the composition and density of the Earth's mantle and core by studying the effects of earthquakes, by measuring the behavior of earthquake waves as they travel through the Earth.
Why is it necessary to think about the different layers of the Earth in terms of both their composition and their physical properties?
There's different layers when you define them differently, for example, when you define under physical you have the - lithosphere - asthenosphere -mesosphere - cores ( outer and inner cores ) and under compositionall you have - crust - mantle (split into several categories) - inner core - outer core you're going to miss vital information if you define it just one way, for example - if you define using composition, you will not know that the core is both liquid and solid, etc.
What is the difference between the crust and the mantle?
The crust is referred to as the outer skin of the planet, where all life as we know it exists. There are two types of crust--continental, which is granitic in composition, and oceanic, which is basaltic in composition. The depth of the crust varies from about 0-40 miles, and is composed mainly of silicate rich rock.The mantle extends from the boundary with the crust, to a depth of around 1800 miles, making it Earth's most massive layer. The uppermost layer is a brittle solid and is attached to the crust. Directly underneath the crust and uppermost mantle lies the asthenosphere, where hot solid rock is in a plastic-like state, able to move long distances on geologic time scales. This plasticity decreases with depth as the lithostatic pressure increases toward the boundary with the core. Chemically, the mantle differs from the crust in that the rock is ultramafic (very high in iron and magnesium) compared to the more silica rich rock of the crust. Temperature also increases with depth (geothermal gradient), and therefore temperatures in the mantle are significantly higher than in the crust.
How can you write composition on grandparents?
we should know about grand parents we can write a composition
The crust and the upper mantle are know as the?
The crust and uppermost brittle mantle are referred to as the lithosphere.
What is the chemical composition of the secretion which come from under the armpit?
Why would anyone want to know the chemical composition of armpit sweat? There is no one answer because sweat is basically pee coming out of your skin. It is a liquid that removes the toxins from your body, so depending on what toxins are in your body, the chemical composition of your sweat changes.
What purpose do continents serve?
Because with out continents the government had know way to keep us in line.
