measurement intro

Area Area is the size of a surface: how much is inside the boundary of a flat (2-dimensional) object such as a triangle or circle. Here Ariel the Dog is waiting patiently inside 1 square metre.

Volume Volume is the amount of 3-dimensional space an object occupies. Also called Capacity. This jug has exactly 1 litre of water in it (slightly more than 2 pints)

Mass (Weight) Mass is how much matter something contains. This bar of Gold has a Mass of 1 kilogram (slightly more than 2 pounds) (Weight is "Heaviness" ... the downward force caused by gravity on an object.)

Temperature How hot or cold a thing is. Temperature is measured using a thermometer, usually in the Celsius or Fahrenheit scale. This block of ice would measure 0° Celsius, or 32° Fahrenheit