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Because of the weight (pressure) of all the stuff above pressing down. For solids this results in hardly any change in volume, and for liquids just the same. But for gases, such as the atmosphere, it has a large effect so that at 100miles or so above the earth, air prsssure and therefore density is practically zero.
What else can I help you with?
Effects of density on the position of material?
When materials with different densities are layered, the denser material will sink to the bottom due to gravity, displacing the less dense material upwards. This is known as stratification. In a fluid medium, objects of different densities will settle at different depths based on their density and buoyancy.
How does the density of water change with depth?
the density of sea increases with depth
Is temperature the only thing that affects density?
It is the easiest way to affect the volume which would change the density. However, if you increase the pressure but keep temperature constant the volume will also change. Any change in volume affects density.
Is density of the whole item equal to its parts?
No, the density of the whole item is not necessarily equal to the density of its parts. The overall density of an object is determined by its mass and volume, which can change when multiple parts are combined. Additionally, different materials can have different densities, affecting the overall density of the item when combined.
Does a change in the mass affect the density of the object?
No, a change in mass alone does not affect the density of an object. Density is determined by the mass of the object and the volume it occupies, so changes in mass need to be accompanied by corresponding changes in volume to affect an object's density.
Why do not all density currents reach the same depths?
Density currents can have different depths due to variations in the initial density contrast, the amount of mixing with surrounding fluids, and differences in temperature and salinity gradients. These factors can influence the speed and penetration depth of the current as it moves through a fluid with varying densities.
Where do fish breed in the sea?
Different species breed in different areas and at different depths.
How does density change with different objects?
The density changes with different objects as all have different mass and volume(the space an object occupies) and the more compressed(Compact) the object is the more density it has.
Why is it necessary to be able to focus a specimen at different depths on the microscope?
Focusing at different depths allows you to visualize different layers within a specimen, providing a 3D view. This can help to identify specific structures or features within the specimen that may be located at different depths. Focusing at different depths is crucial for obtaining clear and detailed images of the entire specimen.
Effects of density on the position of material?
When materials with different densities are layered, the denser material will sink to the bottom due to gravity, displacing the less dense material upwards. This is known as stratification. In a fluid medium, objects of different densities will settle at different depths based on their density and buoyancy.
How does the density of water change with depth?
the density of sea increases with depth
Does density of an object change with altitude?
I am assuming that you mean mass of an object. The answer is no, it does not change. Mass (Density) stays the same wherever the object is, only its weight will change if the force of gravity is different.
Does volume density or mass change when water is frozen then heated?
The density of water changes at different temperatures. As temperature goes up, density goes down.
How much density does an egg have?
There are many different types of eggs, each having a different size and weight. The amount of density an egg has varies from one egg to another. The density of the egg will not change no matter what state it is in.
How does a density of sea water change with depth?
The density of seawater increases with depth due to the increased pressure at greater depths compressing the water molecules closer together. This increased density can also be influenced by temperature and salinity variations within different layers of the ocean.
Is temperature the only thing that affects density?
It is the easiest way to affect the volume which would change the density. However, if you increase the pressure but keep temperature constant the volume will also change. Any change in volume affects density.
What is the relationship between phase diagrams and density in materials?
Phase diagrams and density in materials are related because the different phases of a material (such as solid, liquid, or gas) have different densities. The phase diagram shows how the phases of a material change with temperature and pressure, which can affect the density of the material. In general, as a material changes phase, its density can also change.
