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Did you know?
EduBook Organización
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Oil comes from the decomposition of the remains of microscopic organisms that lived millions of years ago. Oil is the most important natural material for industrial development. It is used to make…
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Final evaluation 1.8 - Matter and Materials
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Describe the following properties of materials: Hardness Eelctrical conductivity Fragility Elasticity Do you know any other properties of materials? Describe one or two.
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Complete. Volume
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Complete the sentences with the missing words: The volume of an object refers to the that it occupies. The SI unit of length is the . The square metre is the SI unit for measuring surface . The cubic…
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Initial evaluation 2 - The Universe and our Solar System
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Complete the following sentences with the missing words: The solar system is found in a galaxy called the . Stars are formed by and produce and . is the closest planet to the Sun and is the farthest.
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Calculate. Distances in the Universe 3
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If the distance between the Earth and the Sun is 150000000 km, how many light minutes separate them? min.
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Answer. Astral bodies 03
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How are a comet's coma and tail formed? Why does a comet lose some of its mass each time it passes close to the Sun?
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Did you know?
EduBook Organización
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When we want water, we just turn on the water tap and out it comes. But water is a very scarce resource. We should not waste or pollute water. Remember, more than 2 billion people do not have access to…
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Final self-evaluation 03 - The Earth's Crust
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Are the following sentences true or false? The Earth's outermost layer is called the crust. Ocean trenches are long, narrow depressions in the floor of the ocean. The most common elements in the…
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Final self-evaluation 9.03 - The Plant Kingdom
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Complete the following sentences with the missing words: are located on the underside of the fronds of ferns. Mosses and ferns use both sexual and reproduction. are non-vascular plants. Mosses are very…
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Answer. Invertebrates (7)
EduBook Organización
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Name two arthropods from each of the following groups: marine, freshwater, terrestrial, flying and parasites.
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