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Analyse. The history of weighing scales
EduBook Organización
- 2392 visitas
The history of weighing scales Scales, or balances, have been used since ancient times to weigh goods for trade. The design of weighing scales has changed over the years. Each new design tried, firstly,…
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Did you know? Matter
EduBook Organización
- 2341 visitas
To measure distances in the universe, we use the light year, which is the distance light travels in one year. To calculate this distance, we have to multiply the speed of light in kilometres per second…
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Final self-evaluation 02 - The relief and rivers of Spain
EduBook Organización
- 1976 visitas
Match each definition to the correct landform or landforms: A large plateau with an altitude of between 600 and 700 metres above sea level. ➝ Exterior mountain ranges located in the south of the…
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The Blue Whale
EduBook Organización
- 1087 visitas
The blue whale is the biggest animal in world. Find out the answers to these questions by exploring the websites. How many great white sharks do you need to match the length of a blue whale? How many…
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The Earth (II)
EduBook Organización
- 2566 visitas
Rotation: days and nights The Earth's rotation causes day and night. The Earth takes 24 hours to complete one rotation. This is one day and one night. The Sun illuminates one half of the Earth's…
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