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Summaries - The Earth, a Living Planet
EduBook Organización
- 3279 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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The density of ice
EduBook Organización
- 3212 visitas
In the change from a solid to a liquid and from a liquid to a gas, there is an increase in volume (expansion). Because the mass is the same, this means that when volume increases, density decreases.…
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End-of-unit activities - Matter and materials
EduBook Organización
- 3097 visitas
Everything around us is made up of matter. Matter can be found in three states: solid, liquid and gas. The air we breathe is a gas, the water in rivers and seas is a liquid, and the rocks are in a solid…
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End-of-unit evaluation - Matter and Materials
EduBook Organización
- 2993 visitas
All objects around us are made of matter. Matter is anything that occupies space. We find matter in three different states: solid, like ice, liquid, like water, and gas, like water vapour. We can make…
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Introduction - Matter and materials
EduBook Organización
- 2934 visitas
Everything around us is made up of matter. Matter can be found in three states: solid, liquid and gas. The air we breathe is a gas, the water in rivers and seas is a liquid, and the rocks are in a solid…
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Answer. Properties of matter: mass, volume and density
EduBook Organización
- 2934 visitas
Remember what you have studied in this section and answer the questions: What is mass? What is volume? What is density? What is matter? What two physical properties does matter have? How many kilograms…
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Introduction - Matter and Materials
EduBook Organización
- 2873 visitas
All objects around us are made of matter. Matter is anything that occupies space. We find matter in three different states: solid, like ice, liquid, like water, and gas, like water vapour. We can make…
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Why do boats float?
EduBook Organización
- 2820 visitas
If we make a little boat out of a walnut shell, we see that it floats and we relate this to the fact that the walnut shell is less dense than water. But what about real boats? Some of them are huge,…
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Match. Basic concepts of fishing
EduBook Organización
- 2755 visitas
Match each definition with a concept: It accompanies fishing boats far out to sea and conserves the catch so that the boats do not have to return home each day. The place where fishermen take their…
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End-of-unit activities - Matter and Materials
EduBook Organización
- 2550 visitas
All objects around us are made of matter. Matter is anything that occupies space. We find matter in three different states: solid, like ice, liquid, like water, and gas, like water vapour. We can make…
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