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End-of-unit activities - Obtaining and using energy
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Energy drives the Universe and is part of all the changes which take place on Earth. The Sun is our main source of energy. Without it, there would be no life and most other sources of energy would not…
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Remember - Obtaining and using energy
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Energy drives the Universe and is part of all the changes which take place on Earth. The Sun is our main source of energy. Without it, there would be no life and most other sources of energy would not…
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Describe. Peninsular rivers and seas
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Look at the rivers on the Iberian Peninsula and answer the questions: Which rivers pass through the Meseta and continue to the Atlantic? Where is the source of the Mediterranean rivers? Why is there a…
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Investigate - Obtaining and using energy
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Energy drives the Universe and is part of all the changes which take place on Earth. The Sun is our main source of energy. Without it, there would be no life and most other sources of energy would not…
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Light
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Why can we see objects? We can see objects because of light. It can come from natural sources such as the Sun or stars. It can also come from artificial sources such as candles and light bulbs. Light…
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Sound
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6.1. What is sound? Sound is the propagation of vibrations and energy in a straight line and in all directions. It travels from the source of sound to the receptors. Unlike light, sound needs a material…
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Summaries - Energy
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1. Energy Energy is the power that causes change in things and allows us to carry out work. Energy is produced by energy sources. The main source of energy on Earth is the Sun. Energy exists in several…
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Find out more. The Rif war in Morocco and the Tragic Week
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After losing the Spanish-American War in 1898, Spain sought out new territories in Africa. The Algeciras Conference (1906) established a Spanish-French territory in Morocco, with Spain controlling the…
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Check. Women and the French Revolution
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Remember what you have studied in this section and answer the questions: Which social reforms introduced during the Revolution benefited women? Make a list of the social classes and professions of the…
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Unit 10: Obtaining and using energy
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Acid rain (n): rain which is acidic due to the presence of pollutants. balanced (adj): distributed evenly. biomass (n): organic matter used as a source of energy. blade (n): the arm which makes a wind…
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