Mass | |
Metres, litres, kilograms | |
1 a . The kilogram. | ||
The
base unit of mass is the kilogram. The base unit of mass is defined as the mass of one litre of water contained in a cubic decimetre. The kilogram is the mass of one litre of pure water at 4ºC. A cylinder with such a mass was made from an alloy of platinum and iridium. Since then, this cylinder has been the universal mass standard. |
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1 b . Multiples and submultiples of the kilogram. | ||||||||||||||||||||||||||||
The base unit of mass is the kilogram; it isn't the gram, for that reason the hectogram, decagram and the gram are submultiples of the kilogram. |
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The multiple
of the kilogram is the metric tonne, which is
1000 kilograms.
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Eduardo Barbero Corral | ||
Spanish Ministry of Education. Year 2007 | ||
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