Weight

Weight  shows how heavy something is.

In everyday life, mass is often called weight but mass and weight are not the same.
Mass is the quantity of matter in an object and doesn’t change but the weight of an object changes according to gravity.

An object on the moon weighs less than it does on the earth, and in space is weightless.

The mass of the object does not change, regardless of where it is (A brick would be weightless in space,
even though it still has the same mass as on earth).

 

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Weight and mass are measured using scales and they are often measured with the same units.

Metric Units  –  Mass, Weight

1 gram = 1000 milligrams

1kg = 1000 g

1 tonne = 1000 kg

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Measured scales

kitchen scales

digital scales (bathroom)

balance scales

spring scales