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Why do boats float?
EduBook Organización
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If we make a little boat out of a walnut shell, we see that it floats and we relate this to the fact that the walnut shell is less dense than water. But what about real boats? Some of them are huge,…
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Volcanoes
EduBook Organización
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2.1. Volcanoes Volcanoes are formed when magma rises to the surface of the Earth (figure 1). During an eruption, there are explosions when gases escape from the magma. The lava pours out and forms lava…
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Video: Fatty Acid Metabolism
Tiching explorer Organización
1 lo usan

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This presentation introduces graphically triacylglycerol, glycerol and fatty acids. It points out where dietary triacylglycerol comes from and how it is processed through digestion. We analize micelles…
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Video: Can robots "think" like humans?
BBC Organización
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In this experiment humans engaged in 2 instant message conversations and they had to guess in which they were talking to a computer. 3 out of 12 times computers were mistaken to be human. Before…
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Reading
EduBook Organización
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Nick’s room was the perfect place to plan things. “Let’s find out more about Mr O’Nell,” said Bill. “Where did he live?” “I’ll look it up in the phone directory,” said Michelle.…
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Energy
EduBook Organización
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What is energy? Energy is the power that causes change in things. It also allows us to carry out work: Aeroplanes can fly because of the energy they get from fuel. Their engines burn this fuel. Plants…
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Painting: The Stonemason's yard, 1726-30
Tiching explorer Organización
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This painting, also known as "Venice: Campo S.Vidal and Santa Maria della Carità" is considered Canaletto's masterpiece. Students may look at it for a minute and then try to remember as many…
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Summary (PET)
EduBook Organización
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Complete this summary of Part Six. For each space, choose the correct word. Now that Dr Jekyll had disappeared, Mr Utterson decided to open the envelope that Dr Lanyon had given . He took it out of his…
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Sponges, cnidarians and echinoderms
EduBook Organización
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Sponges Sponges are the simplest type of animal that exists. They live in water and are attached to rocks on the seabed. Sponges are often irregular in shape. Their bodies have lots of small holes that…
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Before you read (I) (PET) - Life in Lilliput
EduBook Organización
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Look at the six sentences below. You will hear the first part of Part Two. Decide if each sentence is correct or incorrect. Gulliver tried to speak to the Emperor of Lilliput in English. All the people…
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