Divide the mass of the rock by its volume
to calculate the density of the rock. In our example, the density is 20.4/8 = 2.55 g/cubic cm. Divide the rock density by the density of water to calculate the specific gravity.
What is the density of a rock?
Typical densities for gasses are on the order of thousandths of grams per cubic centimeter. Liquids often have densities of about 1.0 g/cm
3
, and indeed, fresh water has a density of 1.0 g/cm
3
. Rocks often have a density
around 3 g/cm
3
, and metals often have densities above 6 or 7 g/cm
3
.
How do you find the density?
The formula for density is the mass of an object divided by its volume. In equation form, that’s
d = m/v
, where d is the density, m is the mass and v is the volume of the object. The standard units are kg/m3.
What is the easiest way to find density?
Using a vernier caliper or ruler, measure the length, depth and width of the object in centimeters. Multiply these three measurements to find the volume in cubic centimeters.
Divide the object’s mass by its volume
to determine its density. Density is expressed in grams per cubic centimeter or grams per milliliter.
How do you find the density of a rock in water?
Divide the mass of the rock by its volume
to calculate the density of the rock. In our example, the density is 20.4/8 = 2.55 g/cubic cm. Divide the rock density by the density of water to calculate the specific gravity.
What are two ways to find density?
Using a vernier caliper or ruler, measure the length, depth and width of the object in centimeters. Multiply these three measurements to find the volume in cubic centimeters.
Divide the object’s mass by its volume to
determine its density. Density is expressed in grams per cubic centimeter or grams per milliliter.
What is formula for mass?
Mass is always constant for a body. One way to calculate mass:
Mass = volume × density
. Weight is the measure of the gravitational force acting on a mass.
What are the 3 equations for density?
- To work out density: p = m / V.
- To work out the mass: m = p x V.
- To work out the volume: V = m / p.
Can you find density without volume?
A simple method based on
the moment of forces and Archimedes’ principle
is described for finding density without measuring the mass and volume of an object. … The object whose density is to be found is then immersed in a liquid of known density and the new moment of the arm of this object is measured.
What is the symbol of density?
The symbol for density is
the Greek letter rho
, What is the density of a material if 450 cm
3
of it has a mass of 200 g?
What equipment do you need to find the density of a rock?
Measuring mass accurately requires
a balance scale
. Electronic scales, triple-beam balances or other balance scales measure mass.
How do you find density with height?
- Subtract the current altimeter setting from the standard pressure of 29.92.
- Multiply by 1,000.
- If you have a negative number, subtract it from the field elevation. Add a positive number.
Which tool is used to find the density of an object?
However, density comes into play with fluids and floatation, as a denser object will always sink into a less dense fluid, and float on a fluid of greater density.
A hydrometer
is a special device used to determine the density of liquids.
