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Atmosphere - GCSE Physics Definition

Reviewed by: Philippa Platt

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The atmosphere is the layer of gases surrounding the Earth, vital for sustaining life and playing a crucial role in climate and weather patterns. It consists primarily of nitrogen (about 78%) and oxygen (around 21%), with trace amounts of other gases like carbon dioxide and argon.

The atmosphere is divided into several layers, including the troposphere, where weather occurs, and the stratosphere, which contains the protective ozone layer. It acts as a thermal insulator by trapping heat from the sun, a process known as the greenhouse effect, and also protects us from harmful solar radiation.

Understanding the atmosphere is essential for studying meteorology, environmental science, and the impact of human activities on climate change.

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Philippa Platt

Reviewer: Philippa Platt

Expertise: Chemistry Content Creator

Philippa has worked as a GCSE and A level chemistry teacher and tutor for over thirteen years. She studied chemistry and sport science at Loughborough University graduating in 2007 having also completed her PGCE in science. Throughout her time as a teacher she was incharge of a boarding house for five years and coached many teams in a variety of sports. When not producing resources with the chemistry team, Philippa enjoys being active outside with her young family and is a very keen gardener

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