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Check. Materials that conduct and insulate heat
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2035 visitas
Remember what you have studied in this section and answer the questions: What are the three ways by which heat is propagated? Give one example of each. Does matter move in convection? And in radiation?…
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Complete. Changes in temperature
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2015 visitas
Complete the text explaining the factors that modify temperature: The factor with the most influence over temperature is , which is the amount of that comes from the Sun's rays. As these rays do not…
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Gods and temples
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2012 visitas
4.1. Egyptian gods Egyptians practised polytheism. This means that they worshipped many gods. Each city and province also had its local gods. The most popular Egyptian god was Ra, the Sun god. Osiris…
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Heat
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1986 visitas
What is heat? Heat or heat energy passes from hot objects to cold objects. When an object heats up, it absorbs heat; when it cools down, it loses heat. Temperature is not the same as heat. It tells us…
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Complete. Energy
EduBook Organización
1974 visitas
Complete the sentences with the correct words: fuels deformations sources hot volume renewable Sun Heat thermal equilibrium up movements coal power On Earth, most of the energy on earth comes from the .…
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True / False. Objects and colours
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1972 visitas
Are these sentences true or false? A rainbow forms when white light from the Sun passes through drops of rainwater and divides into the different colours that form it. When white light shines on an…
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The Earth's movements
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1964 visitas
1.1 The earth moves in space The Earth (as part of the Solar System) moves at a very high speed through the galaxy it is part of, the Milky Way. It also makes two other types of movements: Rotation,…
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Heat, light and sound
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1898 visitas
Colour. Objects have different colours. A leaf is green in colour. Noise. Noise is an unpleasant sound. Traffic makes noise. Heat. Heat makes an object hotter. A fire gives us heat. Reflection. We see…
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The Solar System - The Solar System
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The Solar System is made up of all the celestial bodies that are affected by the Sun's gravity. The most important of these are the planets. Planets Planets are large, round celestial bodies that…
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Find out more The planets of our Solar System - The Universe and our Sol...
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The inner planets The four inner planets are also called terrestrial planets. They are Mercury, Venus, Earth and Mars. The inner planets are rocky, and relatively small. They have few satellites.…
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