Weight is the meacertain of exactly how hefty an item is. Weight is measured in traditional customary devices.

The mass of an item is the amount of product it includes. Mass is measured in standard metric devices.

For day-to-day functions, once you"re on the surconfront of the earth, the distinction is not vital. But if you measure something on an additional planet, its mass will certainly be the same as it is on earth—yet its weight will be different. (Weight relies on gravity, and gravity is different on other planets! This is why when you"re floating in room, you"re weightmuch less. You still have actually mass, though,)

Metric Units

The gram and kilogram are two units provided to measure mass in the metric system .

From the gram, we gain the remainder of the metric units utilizing the traditional metric prefixes.

Milligram(mg)

0.001 gram or 1 1000 gram

Centigram(cg)

0.01 gram or 1 100 gram

Decigram (dg)

0.1 gram or 1 10 gram

Gram(g)

1,000 milligrams

Dekagram (dag)

10 grams

Hectogram (hg)

100 grams

Kilogram (kg)

1,000 grams

Metric ton(t)

1,000 kilograms

A paper clip has actually a mass of around 1 gram.

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A 1 liter bottle of water has actually a mass of 1 kilogram (plus a tiny little bit additional for the plastic).

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U.S. Customary Units

The system for measuring weight (not mass) in the customary device is based on ounce, pound, and also ton. The fundamental unit of weight is a pound(lb).

1     pound   ( lb )   =   16     ounces   ( oz ) 1     ton   ( T )                 =   2 , 000     pounds

An ounce is the smallest unit of weight. A strawberry has actually a weight of about 1 ounce.

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A automobile has a weight of around 2 lots.

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To convert from one unit to one more, we deserve to use unit analysis . For instance, a truck weights 6,000 pounds. How many type of lots is this?

We understand that 1     ton = 2 , 000     pounds .

To transform pounds to lots, you have the right to divide 6 , 000 by 2 , 000 .

6 , 000 ÷ 2 , 000 = 3     lots .

Note:

(a) To transform from larger devices to smaller devices, multiply by the correct unit proportion.

(b) To transform from smaller sized units to larger devices, multiply by the reciprocal of the correct unit proportion.


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(c) Multiplying or separating by a unit ratio is mathematically indistinguishable to making use of a proportion to transform in between devices of meacertain .