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End-of-unit evaluation - Energy
EduBook Organización
- 2935 visitas
The Sun is the Earth's main energy source. The Sun provides plants and animals with light and heat. This means that they can grow, develop and live on Earth. Heat energy has other effects on…
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Introduction - The weather
EduBook Organización
- 2917 visitas
The layer of air that surrounds the Earth is called the atmosphere. All the weather on the Earth happens in the atmosphere. Changes in the atmosphere cause different types of weather. People who study…
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Science and technology in today's world
EduBook Organización
- 2719 visitas
Important advances During the 20th century and the beginning of the 21st century, people made great advances in many areas of science and technology. These advances have improved the quality of life for…
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Complete. Energy
EduBook Organización
- 2674 visitas
Complete the sentences with the correct words: fuels deformations sources hot volume renewable Sun Heat thermal equilibrium up movements coal power On Earth, most of the energy on earth comes from the .…
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Video: What is CNG?
Tiching explorer Organización
- 2482 visitas
This 3 minute animation explains what CNG is and lists the benefits of this fuel. CNG is Compressed Natural Gas. As a car fuel it is a valuable alternative to petrol or diesel because it emits far less…
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Learn...Meteorogical instruments
EduBook Organización
- 1420 visitas
Specialised instruments are used to record weather variables such as pressure, temperature, humidity, rainfall, wind strength and wind direction. These instruments are found in weather stations. An…
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