Measurement Units
Measurement is to find a number that shows the amount of something. A measurement unit is a standard quantity used to express a physical quantity. Let us learn about the physical quantities and some of the standard units used to measure them.
Length
Length describes how long a thing is from one end to the other.
| Metric Unit | US Standard Unit (English Unit or Customary Unit) |
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Millimeter (mm) Used to measure very short lengths or thicknesses. Example, length of a pencil tip.
Centimeter (cm): Used to measure small lengths. Example: Length of a pencil.
Meter (m): Used to measure big lengths. Example: Length of a classroom.
Kilometer (km): Used to measure very long lengths or distance. Example: Distance between two places. |
Inch (in): Used to measure the length of small objects. Example: Length of a bed.
Foot (ft): Used to measure short distances and heights. Example: Heights of buildings.
Yard (yd): It is bigger than a foot. Example: Length of a football field.
Mile (mi): Used to measure long distances. Example: Distance between two places. |
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Weight
The amount of matter a thing consists of is its weight.
| Metric Unit | US Standard Unit (English Unit or Customary Unit) |
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Milligram (mg): Used to measure very light things. Example: Medicines
Gram (g): Used to measure small things. Example: Potato
Kilogram (kg): Used to measure heavy things. Example: Body weight |
Ounce (oz): Used to measure small quantities. Example: Bread.
Pound (lb): Used to measure body weight, etc.
Ton: Used to measure much heavier things. Example: Trucks |
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Capacity (Volume)
Capacity is how much quantity a container can hold.
| Metric Unit | US Standard Unit (English Unit or Customary Unit) |
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Milliliter (ml): Used to measure very small quantities. Example: Medicines.
Liter (l): Used to measure liquids. Example: juice, milk |
Cup Pint Quart Gallon |
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Time
The ongoing sequence of events is time.
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Metric Units and US Standard Unit are the same for the time |
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Second (s) Minute (min) Hour (hr) Day Week Month Year |
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Fun Fact
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