This simulation allows students to visualise the gravitational force that two objects exert on each other. It is possible to change properties of the objects in order to see how that changes the gravitational force between them.

The simulation can be used to:

*Relate gravitational force to the masses...

This is one of a series of extended units, from the Association for Science Education and the Design and Technology Association, to provide in-depth coverage of a topic or an area of the curriculum. This unit was developed by the Centre for Sustainable Energy, which aimed to promote constructive energy education in...

Produced by The Centre for Industry Education Collaboration (CIEC), these materials help students understand the underlying principles of electrolysis and how this process is used in the manufacture of chlorine from brine (salt solution). Students see how the technology has developed and changed the efficiency of...

This resources, from Siemens, looks at how an electric car works, the components of the system and the function of each component. Students research the charge and discharge cycles of a battery-powered device and consider the advantages and disadvantages of battery power. They look at what is meant by the capacity...

A Catalyst article about green chemistry. Many reactions take place in solution. Water is a familiar solvent but there are many others, including a rather surprising one, carbon dioxide, which is a non-polluting ‘green’ solvent. The chemical industry relies on solvents to produce many everyday products, such as:...

This information sheet gives educators background information on how the steel making process is changing in order to reduce or eliminate the amount of carbon dioxide produced in the process. It gives details on traditional steel making processes using carbon as the reductant and then discusses alternatives to...

Many of the chemicals we use as drugs, flavourings and perfumes originate from natural sources but often the most economical way of obtaining them is to produce them artificially on an industrial scale. Scientists at the University of Oxford are researching into how to...

A fact sheet from the Geological society that explores the different greenhouse gases in our atmosphere and the impact they have on our climate. The fact sheet also looks at the human sources of greenhouse gas emissions such as transport, agriculture and industry. 

A Catalyst article about using computers to crunch data from CERN. The article looks at GridPP, a UK computing grid for handling particle physics data.

This article is from Catalyst: GCSE Science Review 2007, Volume 17, Issue 4.

Catalyst ...

The booklets in this series, published in 1971, provide background information and a set of practical activities which explore scientific ideas across range of everyday contexts.

In the context of finding out why we grit roads in winter, students are shown what happens when salt is sprinkled onto ice lollies.  They are then asked If they believe that the temperature of the ice lolly with the salt will increase or decrease, causing it to melt faster. Students then investigate some...

As people live longer the demand for new organs to replace failed ones increases. One possible solution is to build new organs in a dish from cells taken from the patient’s own body. Students use evidence from case studies to work out if this is possible and then to decide whether this new technology offers a good...

This Salters’ Science extension module for biology deals with the breeding, cultivation and harvesting of plants as crops. Experiments on soil structure and nutrient content are matched with data about major crops to show why different crops require different conditions...

This Salters’ Chemistry Course unit from the University of York Science Education Group covered:
* The use of relative atomic masses in determining the masses of reactants and products.
* The manufacture, properties and uses of fertilizers.
* Soil...