The temperature scales measure the heat present in a substance or object.

Five interesting temperature facts

Sound moves slower at lower temperatures and faster at higher temperatures. At -25°C sounds moved at just 315 metres per second but at +35°C sounds move at 351 metres per second.

Temperatures are not only measured in centigrade and Fahrenheit. There are also the scales of Kelvin, Rankine, Delisle, Newton, Reaumur and Rømer.

0 K (Kelvin) is absolute zero, (not something you want to be around to measure). The scale was created by Belfast born, Lord Kelvin.

The Fahrenheit scale was first proposed back in 1724 by Daniel Gabriel Fahrenheit. It is not commonly used in the UK any more but it is still used in the United States

Although a lot of people in the UK still use the term centigrade, as we have here, back in 1948 (because of international confusion) it was agreed that we would all use Celsius. The scale was firstly created by Andres Celsius back in 1742, although in reverse.

Freezing points

If you raise the temperature of a substance above its freezing point, it will become a liquid. The pouring temperature will be slightly higher.