An introduction to asphalt, its production and its uses. Asphalt is produced from quarrying, it is used for roads, footpaths, school playgrounds and car parks. It is delivered hot so the workers must move quickly to get it levelled out before it cools and hardens.
- This clip is from:
- First broadcast:
- 12 November 1997
Can be used to study materials and reversible and irreversible changes. Watch the clip with the children and ask them to identify the materials used to make the asphalt. The children could be asked if there would be a way of getting the materials back to their raw state after the asphalt is made and laid. Further investigations could be set following this such as - can you separate rock salt into sand and salt?