Catalyst Volume 13 Issue 2

This issue of Catalyst includes the following articles:

Fireworks: an Explosive Business

This article looks into how fireworks are made, set off and what gives them their particular colour or effect.

Where on Earth?

Spacecraft move around the Earth in many different orbits, according to their purpose. This article looks at one use of satellites - navigation.

Energy Transfer

This article shows how the loss of energy from food chains limits the number of animals that can survive on the energy fixed by a patch of vegetation.

Effects of Climate Change

Since records began 350 years ago, nine of the warmest years recorded have been since 1990. Warmer temperatures are considered as a good thing, but climate change has far reaching implications. This article investigates the impact human beings have on the global environment and the resulting climate change.

Yes, It Is Rocket Science

The launch of a space rocket has become a familiar image. But how do rockets work, and what is the future for rocket science?

Catalyst is a science magazine for students aged 14-19 years. Annual subscriptions to print copies of the magazine can be purchased from Mindsets.

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Fireworks: an Explosive Business

This Catalyst article looks at fireworks and their history, how they are made and set off, and what gives them their colours and effects. The basic chemistry used in fireworks is looked at and how they work once the fuse is ignited.

This article is from Catalyst: GCSE Science Review 2002, Volume 13, Issue 2...

Where on Earth?

This Catalyst article is devoted to the use of satellites for navigation. It looks at GPS (global positioning system), the involvement of satellites and how GPS signals work in navigation and calculating position.

This article is from Catalyst: GCSE Science Review 2002, Volume 13, Issue 2.

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Energy Transfer *suitable for home teaching*

A Catalyst article devoted to food chains. This article looks at photosynthesis and the loss of energy from plants to animals throughout the food chain. How this limits the number of animals that can survive on the energy fixed by a patch of vegetation is explained. Foraging characteristics and how many animals can...

Effects of Climate Change

A Catalyst article looking at climate change. In particular the science of phenology, the study of the times each year that certain life-cycle events occur, is examined. It involves recording data on when birds migrate, eggs hatch or when leaves change colour. If the climate is changing, the timing of these events...

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