Class Clips is changing
We will be introducing the new Knowledge and Learning Beta website over the coming months. Clips for use in the classroom are now available on your phone, tablet or PC.


Alternatively, you can still browse or search by keyword or clip number on this site.

Clip description Keywords
Filtering rubbish and debris from the River Thames
Filtering rubbish and debris from the River Thames

Duration: 00:47

Rubbish and debris are filtered from the River Thames using a boat, which filters the water and retains the rubbish in a big basket.

 
Separating mixtures of materials
Separating mixtures of materials

Duration: 01:36

An introduction to separating mixtures. Explains how dissolved materials can be recovered by evaporation and distillation, and how solids can be separated from a liquid by filtration.

 
Separating solids and liquids
Separating solids and liquids

Duration: 00:45

A look at a range of day-to-day examples of separating liquids and solids.

 
What happens to our sewage?
What happens to our sewage?

Duration: 09:56

Two children find out what happens to our sewage and how it is cleaned and returned back into the water system.

 

BBC navigation

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.