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Concept of attraction among masses
The educational resource shows a Flash animation about the greenhouse effect The Earth is an open material system, because it interchanges matter and energy with outer space.
Concepto de la Tierra cambio. En el ODE se muestra una animación Flash donde se describe el efecto invernadero. Con este fenómeno se prueba el continuo cambio a que está sometido la Tierra que consti ...
The educational resource shows a visual about the rotation of the Earth.
The educational resource shows a visual about the signs of Zodiac: every year, the earth goes once round the Sun and as this movement is carried out, from the earth we see the sky in a similar way at ...
The educational resource shows a visual about the solar system: the solar system is formed by the sun and all the astronomical bodies which orbit around it.
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