Catalyst Volume 14 Issue 3

This issue of Catalyst includes the following articles:

Life Beyond Earth

This articles looks at the methods used to detect if there is life elsewhere in the universe.

Cook Electric

Gas or electric? What’s best for cooking? Many people prefer gas because it is quick and easy to control. Can the latest electric hobs, ovens and grills compete?

Keeping Things Steady

This article explains homeostasis and how it enables mammals and birds to be active whatever the weather.

Fertilisers

As plants grow they remove compounds of nitrogen, phosphorus and potassium from the soil which need to be replaced to maintain the soil’s fertility. For centuries farmers have used organic manures, crop rotation or ploughed in specially grown crops; the current use of chemical fertilisers is explained.

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

Resources

Life Beyond Earth

A Catalyst article investigating if there is life elsewhere in the universe. Scientists have found many different ways of looking for life. This article looks at the exploration so far.

This article is from Catalyst: GCSE Science Review 2004, Volume 14, Issue 3.

...

Cook Electric

A Catalyst article looking at the use of gas and electric for cooking. The article focuses on the latest hobs which use radiant, halogen or induction electric heating, to see if they can compete with gas.

This article is from Catalyst: GCSE Science Review 2004, Volume 14, Issue 3.

...

Keeping Things Steady *suitable for home teaching*

A Catalyst article about homeostasis describing how the process enables birds and mammals to be active on cold days when other species are not.

This article is from Catalyst: GCSE Science Review 2004, Volume 14, Issue 3.

Catalyst is...

Fertilisers

A Catalyst article about what happens as plants grow. During their growth, plants remove compounds of nitrogen, phosphorus and potassium from soil which need to be replaced to maintain the soil’s fertility. For centuries farmers have used organic manures, crop rotation or ploughed in specially grown crops; today...

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