Table of Contents
- 1 Is a rock more dense?
- 2 Which has a higher density?
- 3 Which has a greater density air or bricks?
- 4 What has a low density?
- 5 Which is more dense air or glass?
- 6 Is air rarer than water?
- 7 Why are some rocks less dense than others?
- 8 How does pore fluid affect the density of rock?
- 9 Which is more dense volcanic rocks or sedimentary rocks?
Is a rock more dense?
If the rock sample weighed 2.71 g and the soil 1.20 g, we could describe the density of the rock as 2.71 g cm–3 and that of the soil as 1.20 g cm–3….Density of Rocks and Soils.
| Soil Type | Density/g/cm3 |
|---|---|
| dolomite | 2.72–2.84 |
| gneiss | 2.59–2.84 |
| limestone | 1.55–2.75 |
| marble | 2.67–2.75 |
Which has a higher density?
Notice that the solid (steel) is the most dense, the gas (air) is the least dense, and the density of the liquid (water) is in between….Density.
| Substance | Density in g/cm³ |
|---|---|
| Steel | 7.82 |
| Water | 1.00 |
| Air | 0.0013 |
Which density is higher air or water?
Air has a density of about 1.2 g /litre, and water has a density of about 1 kg /litre. Air is therefore about 830 times less dense than water.
Which has a greater density air or bricks?
We know that some objects are heavier than other objects, even though they are the same size. A brick and a loaf of bread are about the same size, but a brick is heavier–it is more dense. Air at the surface of the earth has a very different density than air 50 kilometers above the earth.
What has a low density?
Gases have a very low density because their particles are very far apart; for example, air has a density of 0.0013 g/cm3.
What does a higher density mean?
Explanation: Density is a derived unit from two other units: mass and volume. Density is by definition, the amount of mass per unit volume. If a substance has a higher density, it is heavier. Likewise a lighter density means it is much lighter.
Which is more dense air or glass?
Glass is denser than air, so when light passes from air into glass it slows down. Light speeds up as it passes from glass into air because air is less dense than glass.
Is air rarer than water?
Air is an optically rarer medium as compared to glass and water. A medium in which the speed of light is less is known as an optically denser medium. Glass is an optically denser medium than air and water.
Which is more dense feathers or rocks?
Which is heavier, a pound of feathers or a pound of rocks? Answer: They are the same weight (pound equals pound).
Why are some rocks less dense than others?
Rock density is very sensitive to the minerals that compose a particular rock type. Sedimentary rocks (and granite), which are rich in quartz and feldspar, tend to be less dense than volcanic rocks.
How does pore fluid affect the density of rock?
Pore fluids, whether it be air, water, brine or petroleum, have much less density than rock forming minerals. As a result, rock density decreases as porosity increases. Because air, water, brine and petroleum have measureably different densities, the type of pore fluid also impacts the density of the rock.
How are the densities of rocks and minerals expressed?
The densities of rocks and minerals are normally expressed as specific gravity, which is the density of the rock relative to the density of water. This isn’t as complex as you may think because water’s density is 1 gram per cubic centimeter or 1 g/cm3. Therefore, these numbers translate directly to g/cm3, or tonnes per cubic meter (t/m3).
Which is more dense volcanic rocks or sedimentary rocks?
Sedimentary rocks (and granite), which are rich in quartz and feldspar, tend to be less dense than volcanic rocks. And if you know your igneous petrology, you will see that the more mafic (rich in magnesium and iron) a rock is, the greater its density. As you can see, rocks of the same type can have a range of densities.