Length
The standard unit of length in the metric system is the meter. Other units of length and their equivalents in meters are as follows:
1 millimeter = 0.001 meter
1 centimeter = 0.01 meter
1 decimeter = 0.1 meter
1 kilometer = 1000 meters
We symbolize these lengths as follows:
1 millimeter = 1 mm
1 centimeter = 1 cm
1 meter = 1 m
1 decimeter = 1 dm
1 kilometer = 1 km
For reference, 1 meter is a little longer than 1 yard or 3 feet. It is about half the height of a very tall adult. A centimeter is nearly the diameter of a dime, a little less than half an inch. A millimeter is about the thickness of a dime.
Volume
The standard unit of volume in the metric system is the liter. One liter is equal to 1000 cubic centimeters in volume. Other units of volume and their equivalents in liters are as follows:
1 milliliter = 0.001 liter
1 centiliter = 0.01 liter
1 deciliter = 0.1 liter
1 kiloliter = 1000 liters
From these units, we see that 1000 milliliters equal 1 liter; so 1 milliliter equals 1 cubic centimeter in volume. We symbolize these volumes as follows:
1 milliliter = 1 ml
1 centiliter = 1 cl
1 deciliter = 1 dl
1 liter = 1 l
1 kiloliter = 1 kl
For reference, 1 liter is a little more than 1 quart. One teaspoon equals about 5 milliliters.
Mass
The standard unit of mass in the metric system is the gram. Other units of mass and their equivalents in grams are as follows:
1 milligram = 0.001 gram
1 centigram = 0.01 gram
1 decigram = 0.1 gram
1 kilogram = 1000 grams
We symbolize these masses as follows:
1 milligram = 1 mg
1 centigram = 1 cg
1 decigram = 1 dg
1 gram = 1 g
1 kilogram = 1 kg
For reference, 1 gram is about the mass of a paper clip. One kilogram is about the mass of a liter of water.
Time
The following conversions are useful when working with time:
1 minute = 60 seconds
1 hour = 60 minutes = 3600 seconds
1 day = 24 hours
1 week = 7 days
1 year = 365 1/4 days (for the Earth to travel once around the sun)
In practice, every three calendar years will have 365 days, and every fourth year is a "leap year", which has 366 days, to make up for the extra quarter day over four years. The years 1992, 1996, 2000, and 2004 are all leap years. This gives us a total of 52 complete 7 day weeks in each calendar year, with 1 day left over (or 2 in a leap year).
The year is divided into 12 months, each of which has 30 or 31 days, except for February, which has 28 days (or 29 days in a leap year).
Temperature
Temperature is expressed in degrees Celsius in the metric system. The boiling point of water (at sea level) is 100°Celsius, or 100°C. The freezing point of water (at sea level) is 0° Celsius. A hot day is about 30° Celsius.
Decimals in measurement
We use decimals to specify units of measurement when we need more precision about length, volume, mass, or time. For example, when specifying the height of a person 1.63 meters tall, to say that person is 1 or 2 meters tall doesn't give us a very good idea of how tall that person really is.
The prefixes for the different units of length, volume, and mass in the metric system obey the following rules:
Prefix Multiply by
milli- 0.001
centi- 0.01
deci- 0.1
deka- 10
hecto- 100
kilo- 1000
So for example:
1 hectometer = 100 meters
1 centigram = 0.01 gram
3 milliliters = 3 × (0.001 liters) = 0.003 liters
0.9 kilometers = 0.9 × (1000 meters) = 900 meters
You can't compare that. You can only compare units that measure the same kind of thing: length with length, volume with volume, mass with mass, etc.
You can't convert that. You can only convert units that measure the same type of thing - for example, units of length to units of length, units of mass to units of mass, units of time to units of time, etc.
6 units
In a cube, all edges have the same length. To find the cubic dimension (volume), cube the length of one edge: 4x4x4 = 64 cubic units
Length and volume are not the same, any more than time and mass are the same. They are different properties that are measured with different units.A cube that has a height and length and width of one unit will have a volume of one cubic unit, but that does not mean that it is correct to say that its length and volume are the same. Saying that is like saying that an hour weighs the same as a kilogram.
You can't compare that. You can only compare units that measure the same kind of thing: length with length, volume with volume, mass with mass, etc.
They are all units of volume. Milliliter is the same as cubic centimeter.
To convert density to mass, you need to know the volume as well. The formula to calculate mass from density and volume is mass = density x volume. Multiply the density of the substance by the volume in cubic units to get the mass in units of mass (e.g. grams, kilograms).
No; volume and mass are different characteristics with different units of measure.. Mass = Volume x Density
The side length of a cube that has the same volume of a sphere with the radius of 1 is: 1.61 units.
No, volume and mass are not the same thing. Volume is the amount of space occupied by an object, while mass is the amount of matter in an object. Mass is a measure of the quantity of atoms in the object, whereas volume is a measure of the space the object occupies.
You can't convert that. You can only convert units that measure the same type of thing - for example, units of length to units of length, units of mass to units of mass, units of time to units of time, etc.
The units used to measure length, width, and height should be the same to calculate volume in cubic units. For example, if length, width, and height are measured in meters, then the volume will be in cubic meters. It is crucial to maintain consistency in units to ensure accurate volume calculations.
6 units
In a cube, all edges have the same length. To find the cubic dimension (volume), cube the length of one edge: 4x4x4 = 64 cubic units
Length and volume are not the same, any more than time and mass are the same. They are different properties that are measured with different units.A cube that has a height and length and width of one unit will have a volume of one cubic unit, but that does not mean that it is correct to say that its length and volume are the same. Saying that is like saying that an hour weighs the same as a kilogram.
Density is mass per volume. Take the volume and multiply it by the density. Make sure the units used are the same.