Difference between revisions of "Density"
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: An [[object]] with a large amount of [[mass]] in a small [[volume]] is said to have a high [[density]]. | : An [[object]] with a large amount of [[mass]] in a small [[volume]] is said to have a high [[density]]. | ||
: An [[object]] with a small amount of [[mass]] spread over a large [[volume]] is said to have a low [[density]]. | : An [[object]] with a small amount of [[mass]] spread over a large [[volume]] is said to have a low [[density]]. | ||
| − | : The [[SI Unit|units]] of [[density]] are kg/m<sup>3</sup> | + | : The [[SI Unit|units]] of [[density]] are kg/m<sup>3</sup>. |
| + | |||
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
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|} | |} | ||
| − | + | ===Equation=== | |
| + | : Density = Mass/volume | ||
| + | :<math>\rho = \tfrac{m}{V}</math> | ||
| + | Where: | ||
| + | ρ = density | ||
| + | m = mass | ||
| + | V = volume | ||
===Density and Floating=== | ===Density and Floating=== | ||
: If an [[object]] is more '''dense''' than [[water]] it will sink. | : If an [[object]] is more '''dense''' than [[water]] it will sink. | ||
: If an [[object]] is less '''dense''' than [[water]] it will rise through [[water]] and float on the surface. | : If an [[object]] is less '''dense''' than [[water]] it will rise through [[water]] and float on the surface. | ||
Revision as of 10:59, 1 November 2018
Key Stage 3
Meaning
Density is the amount of mass per unit volume of an object.
About Density
- An object with a large amount of mass in a small volume is said to have a high density.
- An object with a small amount of mass spread over a large volume is said to have a low density.
- The units of density are kg/m3.
 |
| Solids are the most dense state of matter because there are a large number of particles in a certain volume and gases are the least dense state of matter because there are a small number of particles in a the same volume. |
Equation
- Density = Mass/volume
\[\rho = \tfrac{m}{V}\] Where: ρ = density m = mass V = volume