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ANEXO I: autores de los vídeos de You Tube
cartoon geocentric solar system by Waylena McCully
cartoon heliocentric solar system by Waylena McCully
Geocentric and Heliocentric Theories by Jacob Richman and Coby Pellis
ANEXO II : Characteristics of inner planets and outer planets (from Essential Natural Science, editorial Santillana)
ANEXO III. Describe an inner planet or outer planet. Your partner will identify it.
Until recently, Pluto was considered the 9th in the Solar System. In 2006 The International Astronomical Union (IAU) decided Pluto was actually a dwarf planet. Use the internet to find out why and answer the next questions:
“Pluto, formal name 134340 Pluto, is the second-largest known dwarf planet in the Solar System (after Eris) and the tenth-largest body orbiting the Sun. Originally classified as a planet, Pluto is now considered the largest member of a distinct population called the Kuiper belt.
Like other members of the Kuiper belt, Pluto is composed mainly of rock and ice and is relatively small: approximately a fifth the mass of the Earth's Moon and a third its volume. It has an eccentric and highly inclined orbit that takes it from 30 to 49 AU (4.4–7.4 billion km) from the Sun. This causes Pluto to sometimes come closer to the Sun than Neptune.
From its discovery in 1930 until 2006, Pluto was considered the Solar System's ninth planet. In the late 1970s, following the discovery of minor planet 2060 Chiron in the outer Solar System and the recognition of Pluto's very low mass, its status as a major planet began to be questioned. On August 24, 2006, the International Astronomical Union (IAU) defined the term "planet" for the first time. This definition excluded Pluto as a planet, and added it as a member of the new category "dwarf planet" along with Eris and Ceres. After the reclassification, Pluto was added to the list of minor planets and given the number 134340. A number of scientists continue to hold that Pluto should be classified as a planet.
Pluto and its largest moon, Charon, are sometimes treated together as a binary system because the barycentre of their orbits does not lie within either body. The IAU has yet to formalise a definition for binary dwarf planets, and until it passes such a ruling, they classify Charon as a moon of Pluto. Pluto has two known smaller moons, Nix and Hydra, discovered in 2005.”
Please complete the crossword puzzle below
«Superfund», donde se incluye una lista de los agentes contaminantes más peligrosos
«teoría del conocimiento» con otros términos como «epistemología», &c. Aquí nos limitaremos a exponer brevemente los problemas fundamentales...
Elevar el conocimiento del alma hasta el conocimiento del bien una ciencia de la cual ningún arte ni ningún conocimiento pudiera...