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End-of-unit evaluation - The natural environment. Ecosystems
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Most of the energy used by living things originally comes from sunlight which is trapped by autotrophs (or producers). This energy is then transferred from the producers to all other living things…
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Answer. Energy inside the Earth
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Look at the picture and answer the questions. How is the Earth's internal energy evident in Yellowstone National Park? Why do geysers eject water intermittently? What is magma? Why is it so hot? Are…
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Check. Metamorphic rocks
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Remember what you have studied in this section and answer the questions: How are metamorphic rocks formed? ➞ Metamorphic rocks are formed by... Where are metamorphic rocks formed? What characteristic…
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Check. Test yourself
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Remember what you have studied in this unit and answer the questions: What is the temperature of the matter at the Earth's core? How fast do tectonic plates move? How do two touching plates move in…
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Observe. The periodic table and chemical formulas
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Look at the photos and answer the questions: Look at figures 1-3. Say which elements are present in each compound and how many atoms there are of each. Which of these compounds is used as fuel?
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Learn. [...]
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The environmental costs of energy production Pollution of the environment due to the way we obtain and use energy produces adverse effects like the following. Acid rain Contaminating, harmful gas…
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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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Order. The English Revolution
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Put the main events of the political conflict in England in the 17th century in the correct order:
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Initial evaluation T4 02 - Spain in the 19th century: building a liberal...
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Answer the following questions: Why do you think that the nobles and the Church did not pay taxes? What are the causes of the colonies becoming independent? What were the Carlist Wars?
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Choose. Opposition to the republican reforms
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Choose the correct answer: Who opposed the republican reforms? Which political groups consistently opposed the Parliament and the Republicans? Who led the Confederación Española de Derechas Autónomas…
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