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Calculate - End-of-unit activities
EduBook Organización
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How far does light travel through water in 10 s? A robot sent a signal at the speed of light from the planet Mars. It took 3 minutes to reach Earth. How far away is Mars? How far does sound travel…
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The density of ice
EduBook Organización
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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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Summaries - The Earth, a Living Planet
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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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End-of-unit activities - Matter and materials
EduBook Organización
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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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Introduction - Matter and materials
EduBook Organización
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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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Introduction - Matter and Materials
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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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End-of-unit evaluation - Matter and Materials
EduBook Organización
- 3144 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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Answer. Properties of matter: mass, volume and density
EduBook Organización
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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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