How do we communicate to others how hot or cold something is? A demonstration of freezing and boiling points and standard measurements of temperature.

This clip is from:
Science Clips, Keeping Warm
First broadcast:
9 October 2007

This clip could be used to remind pupils of the need for accurate measurements when performing fair tests and for using simple pieces of equipment to help inform their findings. It would be useful to watch before starting work on solids, liquids and gases to show that some change state when heated and cooled.