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Self-assessment T01 06 - Our planet Earth
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Are these sentences true or false? The process of erosion takes places before the process of weathering. Sedimentation is the process of depositing materials. Transportation takes place after the…
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Introduction - The age of discoveries
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Christopher Columbus's discovery of America in 1492 is considered to be the beginning of the Modern Age. At this time, the Catholic Monarchs, King Ferdinand and Queen Isabella ruled in the kingdoms…
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Summaries - The 20th century and the world today
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1. Conflicts in the 20th and 21st century During the 20th century, there were two great wars: the First World War (1914-1918) and the Second World War (1939-1945). They were different from previous wars…
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Complete. The bloodstream
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Complete this text with the correct words: In pulmonary circulation, blood passes from the right ventricle to the lungs through the artery. In the lungs, the blood expels carbon dioxide and collects .…
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Urination
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The urinary system The urinary system is the group of organs that expels waste products from our body. The blood collects these waste products from the cells. The urinary system consists of the kidneys,…
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Using our muscles
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Atrophy occurs when we do not use our muscles very much for a long period of time. Our muscles atrophy if we break an arm or leg because the cast stops us from producing movement and we cannot use those…
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True / False. How do muscles move?
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Are these sentences true or false? We only use our muscles to produce movement. When we produce movement or force, our muscles become shorter and thicker because they contract. When the muscle…
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Complete. The functions of the nervous system
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Complete this text with the correct words: The main functions of the system are: Transmit information to the nervous system from the organs via the sensory . Produce appropriate in the central nervous…
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Self-assessment T10 10 - Machines and structures
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Are these sentences true or false? The structure of a building must be stable and resistant. The structure of many buildings consists of a system of girders, beams and pillars. The beams form the base…
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Introduction - Light and sound
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We perceive most of the things around us because we can see or hear them. Most objects do not have their own light. We see them because they are illuminated by light from natural and artificial sources,…
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