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Summaries - Matter: Mass, Volume and Density
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1. Measurement. Magnitudes and units Matter has two general properties. It has mass and volume. Mass and volume are magnitudes. Everything that can be measured has a magnitude. To measure something is…
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equipo de racign
David a Restrepo t Docente
1 lo usan

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In 2006 Citroën took a year out of the WRC to develop the C4 WRC, and therefore used Kronos to enter Xsara WRCs under the Kronos Total Citroën World Rally Team banner. Sébastien Loeb took his third…
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Living conditions in the camps
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The prisoners were used to build and enlarge the camp, though they also had to do agricultural, mining and industrial work. (…) All they were given to eat was soup (...). After their work was over…
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Unit 12: Waves. Light and sound
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Amplitude (n): the distance between a crest or a trough and the equilibrium position of a wave. converging lens (n): a lens which concentrates the light which passes through it. deafness (n): not being…
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End-of-unit activities - Matter and Materials
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All objects around us are made of matter. Matter is anything that occupies space. We find matter in three different states: solid, like ice, liquid, like water, and gas, like water vapour. We can make…
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Analyse. The history of weighing scales
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The history of weighing scales Scales, or balances, have been used since ancient times to weigh goods for trade. The design of weighing scales has changed over the years. Each new design tried, firstly,…
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Our distant past
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Aqueduct. In Roman times, aqueducts carried water from the rivers to the cities. Modern Age. The Modern Age started in the 15th century. It was a period of discovery and new inventions. Castles. A…
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Renewable energy in Spain
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The main renewable energy sources used to produce electricity in Spain are wind, water and the Sun. If we develop these energy sources, we can reduce our dependence on imported energy. Most regions want…
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Science and technology in today's world
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2045 visitas
Important advances During the 20th century and the beginning of the 21st century, people made great advances in many areas of science and technology. These advances have improved the quality of life for…
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Investigate. Non-renewable sources of energy
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2044 visitas
Remember what you have studied in this section and answer the questions: Find out what other products are obtained from coal and oil and say what they are used for. Find out how a nuclear power station…
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