A **unit of measurement** is a amount used as a conventional to expressed a physical quantity. The complying with are the standard quantities being measured and also the respective devices used:

## 1.Length

**Length** – explains exactly how long something is. **Distance, height, thickness, **and also **depth** additionally usage the same devices.

Several of the prevalent devices are as follows:

**• millimeter (mm)** – a metric unit frequently supplied to express the size of extremely small objects like tricks, and also thickness of little objects prefer notebook.

**•centimeter (cm)** – a metric unit typically supplied to express the size of small objects. It is also used in measuring the height of a person.

**•inch (in)** – an English unit frequently used to expush the size of small objects such as boxes and bottles.

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**•foot (ft) ** – an English unit equivalent to 12 inches. It is frequently provided to express brief distances, and also height of all objects favor trees and structures.

A ruler is a common instrument used for measuring the size of small objects. It generally has actually four units of measurement to choose from: millimeter, centimeter, inch, and also foot.

A meterstick is an instrument for measuring brief ranges.

For short ranges, the metric unit **meter (m)** and the English unit **yard (yd) **are commonly provided.

For long distances, the metric unit **kilometer (km)** and the English unit **mile (mi)** are commonly provided.

### Units of Length

Metric System English System

millimeter | Mm | inch | In |

centimeter | Cm | Foot | Ft |

meter | M | Yard | Yd |

kilometer | Km | Mile | Mi |

## 2. Mass

**Mass** – defines exactly how hefty something is.

A few of the prevalent systems are as follows:

**• milligram (mg) ** - a metric unit generally supplied to expush the mass of exceptionally tiny objects favor candy.

**• gram (g)** – a metric unit which is the base unit for mass. It is generally offered to expush the mass of little objects like oselection, egg, and also tomato.

**• ounce (oz)** – an English unit generally offered to expush the mass o

**• kilogram (kg)** – an English unit frequently used for measuring brief distances, and also height of tall objects prefer trees and also structures.

**• pound (lb)** – an English unit commonly provided for measuring short ranges, and height of tall objects like trees and structures.

**• ton** – an English unit commonly used for measuring brief distances, and height of tall objects favor trees and also buildings.

A weighing scale is an instrument commonly used for measuring the mass of fruits, vegetables, and also meat. The scale is calibrated in grams and kilograms

### Units of Mass

Metric System English System

milligram | Mg | Ounce | Oz |

Gram | G | Pound | Lb |

Kilogram | Kg | Ton |

## 3. Time

**Time** – explains just how lengthy it takes to execute something.

Both the metric and also English mechanism uses the same systems of measurement for time.

Some of the common units are as follows:

**•second (s)** – is the base unit for time. One second is equivalent to a tick of a clock’s second hand also.

**•minute (min)** – is a unit tantamount to one revolution of the clock’s second hand or one tick of the clock’s long (minute) hand.

**•hour (hr)** – is a unit equivalent to one radvancement of the clock’s lengthy (minute) hand or one tick of the clock’s brief (hour) hand.

A clock is a prevalent instrument for indicating time. It shows the moment in hrs, minutes, and also sometimes in secs.

**•day (d)** – is a unit identical to two revolutions of the clock’s short (hour) hand.

**•week (wk)** – is a unit equivalent to 7 days.

**•month (mo)** – is a unit equivalent to 30 days. It is frequently used in determining the age of an infant or a baby pet.

**•year (yr)** – is a unit equivalent to 12 months. It is generally offered in determining the age of a person or a things.

### Units of Time

Second | s |

minute | min |

hour | hr |

day | d |

week | wk |

month | mo |

year | yr |

## 4. Area

**Area** – describes how much surface is lived in by somepoint.

The measurement for area uses the very same units of measurement for size. The only distinction is that the devices are "squared" given that area is a product of two dimensions (usually length and also width, which uses the exact same unit).

Some of the widespread systems are as follows:

**•square centimeter (`cm^2` or sq. cm) ** – is a metric unit indistinguishable to a square through sides 1 cm each. Normally supplied in measuring tiny areas such as chessboard.

**•square foot (`ft^2` or sq. ft) **– is an English unit tantamount to a square through sides 1 ft each. Normally provided in measuring the floor or room area.

**•square meter (`m^2` or sq. m) ** – is a metric unit identical to a square via sides 1 m each. Normally used in measuring the location of a residential lot.

**•acre ** – is an English unit offered to meacertain land area such as farms and also amusement parks.

**•hectare (ha) ** – is a metric unit equivalent to a square through sides 100 m each. Like acre, it is primarily used in land measurement.

A footsphere area normally procedures around 1 hectare.

## 5. Volume

**Volume** – defines exactly how a lot space (or liquid) is occupied (or contained) by somepoint. Similar to location, volume also supplies the devices of length however the just distinction is that the unit is “cubed”. Cubed systems are typically provided for quantities of space while tright here are also devices of volume dedicated for liquid dimensions.

Several of the widespread devices are as follows:

**• milliliter (mL) ** – is a metric unit typically supplied for measuring little quantities of liquid such as perfume.

**• cubic centimeters (`cm^3` or cc) ** – is a metric unit for volume (both area and liquid) matching to a cube through sides 1 cm each. A cubic centimeter is tantamount to a milliliter.

**• fluid ounce (fl oz) ** – is an English unit commonly used for measuring liquids in bottles such as soft drinks.

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**• cup ** – is an English unit tantamount to 8 fluid ounces. It is commonly used in measuring ingredients for cooking and baking.