Geography, SS 1, Week 8 Topic: Earth’s Structure Content: The Earth’s structure Importance of atmosphere Importance of hydrosphere The Internal structure of the Earth Introduction – The Earth Earth is unique among the known planets: it has an abundance of water. Other worlds — including a few moons — have atmospheres, ice, and even oceans,
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Venus is one of the four terrestrial planets in the Solar System, meaning that, like Earth, it is a rocky body. In size and mass, it is similar to Earth, and is often described as Earth’s “sister” or “twin”. The diameter of Venus is 12,092 km (only 650 km less than Earth’s) and its mass is 81.5% of
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Fact One Earth is the only planet in the Solar System to have water in its three states of matter: as a solid (ice), a liquid (sea, rain, etc.) and as a gas (clouds). Water is, of course, the most important liquid for life. Fact Two Earth is almost five billion years old, although life
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Mars is the fourth planet from the Sun and the second smallest planet in the Solar System, after Mercury. Named after the Roman god of war, it is often referred to as the “Red Planet” because the iron oxide prevalent on its surface gives it a reddish appearance. Mars is a terrestrial planet with a thin
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