1.1 0.0 / 5 ? AstronomyEarthGCSEEdexcel Created by: GeorgiaCreated on: 10-05-14 08:03 Earth's atmosphere compostition Mainly nitrogen and oxygen. 1 of 6 Evidence for Earth being spherical Satellites orbit the Earth, planes fly in arcs, images from space. 2 of 6 How is Earth distinguished from other planets? Liquid water (covering 70% of surface, life in diverse forms and an atmosphere of nitrogen and oxygen. 3 of 6 What's the ecliptic? The plane on which Earth orbits the Sun. 4 of 6 Diameter of Earth? 13,000km 5 of 6 Benefits of Earth's atmosphere? It absorbs harmful ultraviolet radiation that can cause skin cancer, provides us with oxygen, protects us from PHOs 6 of 6
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