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Order of Magnitude (Length)

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Metric System units of Length[edit | edit source]

Yoctometers[edit | edit source]

So small. It’s equal to a septillionth of a meter. That means 1 septillion of these will equal 1 meter. Symbol is Ym.

Zeptometers[edit | edit source]

It’s equal to a sextillionth of a meter. That means 1 sextillion of these are equal to a meter. 1000 yoctometers in 1 zeptometer.Symbol is zm.

Attometers[edit | edit source]

Attometers are a quintillionth of a meter. So small. That means 1 quintillion of these is 1 meter. 1000 zeptometers or 1,000,000 yoctometers equal 1 attometer. Symbol is am.

Femtometers[edit | edit source]

1 fm in a helium atom

A Femtometer is equal to 1 quadrillionth of a meter. That means 1 quadrillion of these is 1 meter. 1000 attometers,1,000,000 zeptometers or 1,000,000,000 yoctometers equal this femtometer.Symbol is fm.In the image you can see how small a femtometer is.

Picometers[edit | edit source]

A Picometer is 1 trillionth of a meter. That means 1 trillion of these is a meter (40 inches). 1000 femtometer,1,000,000 attometers,1,000,000,000 zeptometers, 1,000,000,000,000 yoctometers is a picometer. In the image. 1 Å = 100 pm.Symbol is pm.

Nanometers[edit | edit source]

A Nanometer is 1 billionth of a meter. That means 1 billion of these is a meter (40 inches). 1000 picometers,1,000,000 femtometers,1,000,000,000 attometers,1,000,000,000,000 zeptometers,1,000,000,000,000,000 yoctometers.Symbol is nm.

Micrometers[edit | edit source]

A Micrometer is 1 millionth of a meter. That means 1 million of these is a meter. 1000 nanometers, etc is a micrometer. The Symbol is ɥm. 100 micrometers (More expressed 100,000 nanometers) is the thickness of a sheet of paper.

Millimeter[edit | edit source]

A Millimeter is 1 thousandth of a meter. It’s 1/10 of a centimeter.That means 1000 of these is 1 meter. You can see a millimeter. Symbol:mm.

Centimeter[edit | edit source]

A Centimeter is 1 hundredth of a meter, It’s 1/100 of a meter. 2.5 centimeters (25 millimeters) is 1 inch. Symbol: cm.

Meter[edit | edit source]

A Meter is 1/1000 of a kilometer. It’s equal to around 40 inches. This is the base unit. It make sense to measure your height in cm or m.Symbol is m.

Kilometer[edit | edit source]

A Kilometer is 1000 meters, It’s 1/1000 of a megameter. This is used for long distances. Symbol is km. Some stuff above 1000 km (1 Megameter) is still used in kilometers.

Megameter[edit | edit source]

A Megameter is 1,000,000 meters. It’s 1/000 of a Gigameter and 1000 kilometers. A lot of people say 1000 kilometers rather than 1 megameter.Symbol:Mm

Gigameter[edit | edit source]

A Gigameter is 1 billion meters. It’s 1/1000 of a terameter and 1000 Megameters. Although people say 1,000,000 km instead of 1 Gm. Symbol is:Gm. 149.6 Gm is equal to the distance from the earth to the sun.

Terameter[edit | edit source]

A Terameter is 1 trillion meters. It’s 1/1000 of a petameter. 1000 Gigameters. Although people say 1 billion kilometers rather than 1 Tm. Symbol is Tm.

Petameter[edit | edit source]

A Petameter is equal to 1 quadrillion meters. It’s 1/1000 of a exameter. 1000 terameters. Although people say 1 trillion kilometers or use light years instead.Symbol is Pm.

Exameter[edit | edit source]

A Exameter is equal to 1 quintillion meters. It’s 1/1000 of a zettameter. 1000 petameters. Although people use light years or kilometers instead.Symbol is Em.

Zettameter[edit | edit source]

A Zettameter is equal to 1 sextillion meters. It’s 1/1000 of a yottameter and 1000 exameters = 1 zettameter. Although people use light years.Symbol is Zm.

Yottameters[edit | edit source]

A Yottameter is equal to 1 septillion meters. It is so big. 1000 zettameters is equal to 1 yottameter.Symbol is Ym.

Imperial Units of length[edit | edit source]

Inch[edit | edit source]

A inch is equal to 2.5 centimeters. It is 1/12 of a foot. It’s 1/36 of a yard. The symbol is in.

Foot[edit | edit source]

A Foot is 12 inches. It is 1/3 of a yard and 1/5280 of a mile. The symbol is ft.

Yard[edit | edit source]

A Yard is 36 inches or 3 feet. It is 1/1760 of a mile. The symbol is yd.

Mile[edit | edit source]

A Mile is 5280 feet or 1760 yards. The mile is equal to 1.6 kilometers. The symbol is mi.