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Final Autoevaluation T10 01 - Obtaining and using energy
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Choose the correct answer: What type of energy is produced when a girl is moving on roller skate? How is this energy transformed when she goes up hill? When a an elastic bow shoots an arrow to the…
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Effects of heat on bodies (II)
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4.1. Expansion The term expansion refers to the increase in a substance's volume. This causes a reduction in the substance's density. The opposite effect is called contraction. The particles…
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Groucho Marx on the 1929 crash
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Soon, a business much more attractive than the theatre caught my attention, as well as the rest of the country's. It was something called the stock market. I was very pleasantly surprised to…
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Reading
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The alarm clock1 rang at seven o’clock in the morning, and Carol and Steve woke up and jumped out of bed. They had to catch a plane. They looked outside their bedroom window and it was a sunny day in…
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Rocks and soil on the Earth's surface
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Types of rocks The Earth's crust is made up of three types of rock: igneous, sedimentary and metamorphic. Igneous rocks are formed when magma (a rock in a liquid state) cools. If the magma reaches…
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Reading
EduBook Organización
1865 visitas
One day I sent Friday to get a turtle. He came running back to me: ‘Master, Master! There are three canoes!’ He was very afraid. I took my pistols and my sword. We went up the hill to look at them.…
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The senses - The senses
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We receive information on what is happening outside our body through our sensory receptors. These receptors are specialised nerve cells that capture stimuli from outside our body. There are different…
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Reading
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‘Are you coming to this beach party, Amy?’ shouted Claire. ‘If you don’t hurry up we’ll miss the bus. There isn’t another one for an hour after that,’ said Lisa. ‘I’m coming,’ said…
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Final self-evaluation 01 - Agriculture, livestock and fishing
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Complete the following sentences with the missing words: The economic activities that make up the primary sector are , , and . In MEDCs, agricultural is very high, while in MEDCs it is very . The main…
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Introduction - Our planet Earth
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Most of the Earth is made up of the geosphere. This is a large sphere of rock with a diameter of 13000 km. A large part of the geosphere is covered by the hydrosphere. This is a layer of liquid water…
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