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Recursos educativos
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It's a small world
EduBook Organización
- 2512 visitas
Although the Earth is enormous, modern technology has made distances seem much smaller. In the 16th century, Magellan and Elcano took three years to sail around the world for the first time. Today, a…
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Summaries - Heat and temperature
EduBook Organización
- 2503 visitas
1. Energy transfer: heat Heat or thermal energy is the energy that is transferred from hot bodies to cold bodies. All the particles that make up bodies have internal energy; the particles in a hot body…
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True/false. Temperature
EduBook Organización
- 2489 visitas
Are these statements true or false?: It is colder in inland places than on the coast. On coastlines, winters are mild because the cold temperature is absorbed by the sea. The coldest regions on Earth…
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Complete. Countries according to their economies
EduBook Organización
- 2487 visitas
Complete these sentences with the missing words: In countries, the percentage of the active population in the primary sector is very . In developing , more than half of the active population works in…
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The need for energy. Sources of energy
EduBook Organización
- 1 lo usan
- 2280 visitas
3.1. The need for energy through history In prehistoric times, human beings, who were nomadic hunter-gatherers, needed no other energy than fire to keep them warm and cook their food. Centuries later,…
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Complete. Effects of the Moon
EduBook Organización
- 2418 visitas
Complete the sentences with the missing words: A solar eclipse can be , if the Sun is completely covered; , if only a part of the Sun is hidden; or , if if the Moon only hides the central area of the…
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Introduction - The 20th century and the world today
EduBook Organización
- 2424 visitas
Human life changed during the 20th century more than ever before. The world's economy and population grew quickly and scientific and technological advances improved the average standard of living.…
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Answer. Island landscapes
EduBook Organización
- 2381 visitas
Remember what you have studied in this section and answer: Where are the Balearic Islands located? Which Balearic Island is the most mountainous? Which of the Canary Islands has the highest mountain in…
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In defence of imperialism
EduBook Organización
- 2376 visitas
Yesterday I was in London's East End (a working-class district), and I watched a meeting of unemployed people. (…) When I got home, I thought about what I had seen and heard at the meeting, and I…
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Think about it. The removal of cell waste
EduBook Organización
- 2359 visitas
Remember what you have studied in this section and answer the questions: Why do sponges and coelenterates not need excretory organs? What is the difference between defecation and excretion? Why is more…