Available online
Description
Fire is a major hazard in the dry Colorado environment and Mike and Jonathan's challenge is to build a carbon dioxide fire extinguisher. The basis of the extinguisher is a simple reaction of baking... soda plus acid, which fizzes up to create the gas they want. Meanwhile, Hermione and Ellen have an even tougher task. They have to find a way to clean up the polluted water flowing out of an old mine. The mine water is acidic and contains high levels of toxic metals and this mine run-off flows into streams and rivers killing off aquatic life. Hermione's plan is to use a rock - limestone - to neutralise the acidity.
Fire is a major hazard in the dry Colorado environment and Mike and Jonathan's challenge is to build a carbon dioxide fire extinguisher. The basis of the extinguisher is a simple reaction of baking... soda plus acid, which fizzes up to create the gas they want. Meanwhile, Hermione and Ellen have an even tougher task. They have to find a way to clean up the polluted water flowing out of an old mine. The mine water is acidic and contains high levels of toxic metals and this mine run-off flows into streams and rivers killing off aquatic life. Hermione's plan is to use a rock - limestone - to neutralise the acidity.
| Series: | Rough science 6; Series 6 |
|---|---|
| Episode | 2 |
| Published: | 2005 |
| Rights Statement: | |
| Restrictions on use: | |
| Duration: | 00:28:53 |
| + Show more... | |
| Producer: | Finola Lang |
| Contributors: | Mike Bullivant; Hermione Cockburn; Jonathan Hare; Kate Humble; Ellen McCallie |
| Publisher: | BBC Open University |
| Link to related site: | Website: http://www.open2.net/roughscience6/index.html |
| Subject terms: | Acids; Carbon dioxide; Fire extinguishers; Water treatment plants |
| Production number: | JOUA373W |
| Videofinder number: | 7142 |
| Available to public: | no |
