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The propagation of heat
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Heat transfers from a hot object to a cold object by means of three mechanisms: conduction, convection and radiation. 6.1. Conduction Heat is transmitted through solid substances by conduction (figure…
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Atoms and molecules
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3.1. Atoms The smallest units of matter are called atoms. All substances are made up of atoms. Atoms contain three types of particles: protons, neutrons and electrons. Protons and neutrons are located…
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Work it out. The natural environment
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Remember what you have studied in this section and answer the questions: What environmental conditions prevent the existence of life on the other planets in the Solar System? Why is light a limiting…
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Reading
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Next morning, Mary told Martha about finding Colin. Martha was very upset. She thought that she could lose her job for allowing Mary to find Mr Craven’s son. ‘Don’t worry,’ said Mary. ‘Colin…
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Unit 8: The Earth, a Living Planet
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Asexual reproduction (n): the process of reproduction of a single organism by itself. autotroph (n): an organism that produces its own food for nutrition. bioelement (n): any of the chemical elements…
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Reading
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The next morning Dorothy and the Scarecrow hear a loud noise outside the house. “What’s that?” asks Dorothy. “I don’t know,” says the Scarecrow. “Let’s go and see.” They run out of the…
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Mass
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2.1. Mass. Units of mass Mass is the amount of matter that makes up a body or object. The SI unit of mass is the kilogram (kg). Multiples and submultiples To measure different quantities, multiples and…
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Activities - Part Two
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Mowgli, Bagheera and Baloo are very sad. The picnic is in the tiger’s tummy! ‘What’s the matter?’ asks Hathi, the elephant. ‘Look at the greedy tiger!’ says Mowgli. ‘My delicious picnic is…
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Final evaluation 1 - The Universe and our Solar System
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Decide which of the following sentences are false and correct them: Most of the matter in the Universe cannot be seen. The Milky Way is located in the centre of the Solar System. The Bing Bang theory…
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Reading
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Mr Utterson was at home one evening, when Dr Jekyll’s servant came to the house. ‘Good evening, Poole,’ the lawyer said. ‘What can I do for you?’ He looked at the servant for a moment. Poole…
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