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Why will a dense area of rock under the surface increase the local strength of gravity?
Wiki User
∙ 11y ago
density is directly proportional to the mass
density = mass / volume
more density, then more mass and more mass, more gravity,
as gravity force = mass x gravity acceleration.
Wiki User
∙ 11y ago
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As the air on the surface of earth warms does its density increase or decrease?
As air gets warmer, it expands and becomes less dense.
Can the earth have the same density in the center as it does on the surface?
No it can not. We know this because we know the mass of the whole Earth (by looking at its gravity) and if the whole Earth were made of rocks of the same density as we see at the surface, there would not be enough mass to account for the gravity. The Earth must have more dense stuff in its core.
Can earths gravity increase or decrease explain?
Yes, it is not a constant. The force of gravity is related to the distance from the centre of the earth so that the force of gravity will be slightly reduced at altitudes. Also, the earth is not a perfect sphere - it bulges at the equator and is flatter at the poles. So the force of gravity will be greater at the poles. The force of gravity is also affected by what is under the surface: if standing over dense rocks, the force will be greater. Finally, the force of gravity is also higher after heavy rainfall. [I guess that is because the water fills up all the air gaps in the soil and so increases its density.]
Which planet has the weakest force of gravity?
Pluto was the smallest planet in our solar system before it was reclassified (though Ceres is even smaller, and was considered a planet longer than Pluto). Because the gravity of an object is directly proportional to its mass and density, that would give Pluto the smallest surface gravity. It is now known that there are a few other large comets out there nearly as big as Pluto (Eris is even bigger). Pluto is no longer classified as a planet because it has not significantly cleared its orbit of debris. Therefore of the eight planets in our solar system, Mercury is the smallest and has the least surface gravity. Mercury is also the most dense, having a large and rich iron core.
What draws dense rock away from Mid ocean ridges?
Gravity
Why will the dense area of rock increase the local strength of gravity?
Because it would mean that there is more mass in the same little area, compared to the adjacent areas.
Does larger planets have more gravity than the earth?
It is more accurate to say that more massive planets have stronger gravity. If a planet had the same mass as Earth but a larger radius (i.e. it is less dense) surface gravity would be weaker, as the strength of gravity depends on both an objects mass and the distance from its center.
Why is gravity strongest at Earth's surface?
Gravity is strongest at the earths surface because it's atmosphere is v dense and so the force inc.this happens because force is directly proportional to density.
Is Venus' gravity more or less than earth?
Venus is slightly smaller and less dense than the Earth is, so it has lower surface gravity.
What is gravity survey?
If the earth had a completely smooth surface and all the components form which it was made were all evenly mixed up, then the force of gravity would be the same at all points on its surface. However the earth is not smooth , it has mountains and hollows in its surface and the rocks form which it is made are not evenly mixed, some surface rocks are heavy (dense) and some are light. This means that as compared to the theoretical smooth earth gravity field, the real earth gravity field varies from point to point over the surface. A gravity survey measures the small variations in the pull of gravity over the earth's surface and makes a map of these changes. This map helps geologists understand where the dense and light rocks are beneath the surface.
Why does air become less dense as you increase altitude?
gravity, denser things go down. -earth science student
As the air on the surface of earth warms does its density increase or decrease?
As air gets warmer, it expands and becomes less dense.
Can the earth have the same density in the center as it does on the surface?
No it can not. We know this because we know the mass of the whole Earth (by looking at its gravity) and if the whole Earth were made of rocks of the same density as we see at the surface, there would not be enough mass to account for the gravity. The Earth must have more dense stuff in its core.
Is cooler and denser air pulled down by gravity?
Yes. But as they approach the Earth's surface, the air will become more compressed and thus warmer and even more dense.
How is gravity about the same on Mars and Mercury?
This does seem odd. Mars, with a mass that is about twice the mass of Mercury, has about the same surface gravity. Mars' mass is about .107 the mass of earth, and the mass of Mercury is about .055 the mass of earth. The surface gravity on Mars is about .38 times the surface gravity of earth, and the surface gravity of Mercury is about .38 times the surface gravity of earth as well. The difference is that the mean density of Mercury is about 5.43 grams per cubic centimeter, and the mean density of Mars is about 3.93 grams per cubic centimeter. Mercury is quite a bit more dense, so if you stand on Mercury you are much closer to the center of gravity of the planet. Mercury has a tiny slightly bit more gravity than mercury though.
Can earths gravity increase or decrease?
Yes, it is not a constant. The force of gravity is related to the distance from the centre of the earth so that the force of gravity will be slightly reduced at altitudes. Also, the earth is not a perfect sphere - it bulges at the equator and is flatter at the poles. So the force of gravity will be greater at the poles. The force of gravity is also affected by what is under the surface: if standing over dense rocks, the force will be greater. Finally, the force of gravity is also higher after heavy rainfall. [I guess that is because the water fills up all the air gaps in the soil and so increases its density.]
Can earths gravity increase or decrease explain?
Yes, it is not a constant. The force of gravity is related to the distance from the centre of the earth so that the force of gravity will be slightly reduced at altitudes. Also, the earth is not a perfect sphere - it bulges at the equator and is flatter at the poles. So the force of gravity will be greater at the poles. The force of gravity is also affected by what is under the surface: if standing over dense rocks, the force will be greater. Finally, the force of gravity is also higher after heavy rainfall. [I guess that is because the water fills up all the air gaps in the soil and so increases its density.]
