why is density a very important principle in science?

Answer 1

Like in physics and chemistry; it is a rather fundamental thing.
It defines what sinks and floats, what wieght curtian volumes of materials are; what the air pressures becomes and effects the weather; it is related to ultra-sound since this sound travels faster through dense objects; it effects osmosis and all kinds of things.

Answer 2

Liquid Density Applications

Question - My nine year old son and I are working on his science project. We have mixed three different types of liquids together to prove that one liquid is more dense than the other, and will separate. In other words, one liquid is heavier than the other. I am having problem applying this concept to everyday life, on a level where he can understand. I would appreciate it, if you would give me some examples of why we need to know the density of a liquid, and how is it used in everyday life. ------------------------------------------------ I am an engineer who deals with fluid systems. To me density is very important when it comes to moving a fluid around. When I say fluid, I mean both liquids and gases. Imagine if I want to pump water from point A to point B. One of the important properties of the water is density, because it determines what size pump I need to move it down the pipeline. Now, imagine I want to pump ketchup from point A to point B. It is more dense, so I need a more powerful pump to get it down the line. Understand that density is just one of the properties that determines how easy it is to pump a fluid from one place to another. One example that your 9 year old would probably understand the best when it comes to density of gases is a helium filled balloon. Helium trapped in a balloon is less dense than the surrounding air and thus it rises. Hope this helped.


Wow!! Where to start. 1. Many items in the grocery store are packaged by volume, but sold by weight (potato chips for example). So are you getting ripped off by just buying the biggest bag? 2. The WEIGHT of any object floated on water is buoyed up by a force equal to the VOLUME of the fluid displaced (Archimede's Principle). So some objects sink in pure water but sink in salt water -- an egg for example. It's a matter of the density of the object (egg) and the fluid (salt water). The conversion from one to the other involves the density. 3. Submarines float or sink depending upon how much their density is increases by taking on ocean water ballast. 4. All "shots" in a doctor's office are delivered by volume but are formulated by the weight of the active ingredients. The conversion between the two is density. 5. A back yard grill that uses propane as a fuel. The tank is filled with a certain weight of propane, but the temperature of the grill is determined by the relative volume of gaseous propane and air. Here we do not even do the calculation but still use the concept. Any place where one needs to be able to inter-convert from the volume of something to its weight -- or the other way around -- uses the density to do the conversion

Answer 3

The lighter the density, the more buoyant in a liquid, the heat exchange rate is different than that of a dense object. Density dictates what that compound can be used for as far as strength, insulation, flammability, conductivity of heat, electricity, cold, sound.

Answer 4

some thing that ought to correctly be subsidized up with information will carry extra sway in any argument than some thing that ought to't. Centuries in the past guy worshiped the moon, the solar and the celebs, using technological awareness we now now precisely what those are and the idea-about worshipping them as deities at the moment is daft. Worshipping god or similar is the sought after day equivalent of lack of comprehend-how like this that hopeully sometime must be enlightened with the aid of technological awareness. The bible is riddled with impossibilities, inaccuracies so for me can't be taken heavily even permitting for some resourceful license in that is writings. technological awareness can get issues incorrect now and again in spite of the undeniable fact that it continually receives there contained in the proper and at the same time as it receives it proper all of us with 1/2 a mind can see that is proper sufficient with out disputing it.

Answer 5

Yes,but not only the density alone.Other units add to the importance of the sciences especially in the research.

Answer 6

Density is important in calculating the Reynolds number in fluid flow. The Reynolds number is then used to determine various friction and heat transfer factors in fluid flow.

Answer 7

Because it is on density of a substance that its properties depend

Answer 8

because of morons taking classes that they should not. These folks brains are outa here.

Answer 9

Oops, read the question wrong, I have no clue. Me dumb.

Answer 10

That's a dense question, ba duh duh! Me so funny!!!

It tells them how much mass is involved.