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Introduction - Obtaining and using energy
EduBook Organización
- 3754 visitas
Energy drives the Universe and is part of all the changes which take place on Earth. The Sun is our main source of energy. Without it, there would be no life and most other sources of energy would not…
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End-of-unit activities - Obtaining and using energy
EduBook Organización
- 3696 visitas
Energy drives the Universe and is part of all the changes which take place on Earth. The Sun is our main source of energy. Without it, there would be no life and most other sources of energy would not…
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The Solar System
EduBook Organización
- 3679 visitas
The Solar System is made up of all the celestial bodies that are affected by the Sun's gravity. The most important of these are the planets. Planets Planets are large, round celestial bodies that…
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Remember - Obtaining and using energy
EduBook Organización
- 3628 visitas
Energy drives the Universe and is part of all the changes which take place on Earth. The Sun is our main source of energy. Without it, there would be no life and most other sources of energy would not…
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What plants need
EduBook Organización
- 3621 visitas
1.1. Plant nutrition Nutrition is all of the processes that living things use to convert the foods they ingest. They transform these nutrients into biomolecules that they need to make cells and tissues.…
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The Earth (I)
EduBook Organización
- 3593 visitas
The planet Earth is round, like a ball. We call this shape a sphere. We use imaginary lines to study it. The Earth moves in two ways. It orbits (moves around) the Sun and it rotates on an imaginary line…
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Investigate - Obtaining and using energy
EduBook Organización
- 3461 visitas
Energy drives the Universe and is part of all the changes which take place on Earth. The Sun is our main source of energy. Without it, there would be no life and most other sources of energy would not…
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Summaries - Matter and its properties
EduBook Organización
- 3434 visitas
1. Matter Matter is anything which has mass and volume. For example, the Sun, the Earth, and human beings are all made up of matter. A physical system is any part of the Universe which is made up of…
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Summaries - The Earth, a Living Planet
EduBook Organización
- 3338 visitas
1. The beginning of life The Earth is the only planet in the Solar System that has all the conditions for life to develop. These conditions are its size, its distance from the Sun and the existence of…
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