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Recursos educativos
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Final self-evaluation 1.6 - Matter and Materials
EduBook Organización
- 1872 visitas
Complete the following sentences with the missing words: A group of atoms is called a . move around the nucleus of an atom. are made up of two or more different chemical elements. The formula for is…
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True or false. Measurement
EduBook Organización
- 1886 visitas
Are the following sentences true or false? Volume is an example of magnitude. To measure a magnitude, we compare it with another magnitude. To measure something we have to establish the magnitude of an…
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Answer. Density 5.4
EduBook Organización
- 1876 visitas
What measurements do we need to know to determine the density of an object?
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Final self-evaluation 9 - Matter: Mass, Volume and Density
EduBook Organización
- 1877 visitas
Match each concept with a definition: mass scales density metre kilogram litre volume square centimetre
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About our planet
EduBook Organización
- 1879 visitas
2.1. The earth's layers The Earth is a rocky, almost spherical planet. Its radius is 6373 kilometres. There is a lot of activity inside the Earth. This activity is evident in the crust in the form…
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The Earth's satellite: the Moon
EduBook Organización
- 1879 visitas
3.1. General characteristics of the moon The Moon is the only natural satellite of the Earth. It is 49 times smaller than our planet. As the Moon does not have an atmosphere, the Sun's rays and the…
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Final evaluation 4 - The Hydrosphere
EduBook Organización
- 1872 visitas
Match each fact with the property of water that makes it possible: Fish can live below the ice. Sea water is salty. Coastal areas have milder temperatures than inland areas. Water circulates through rivers.
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Final self-evaluation 03 - The Earth's Crust
EduBook Organización
- 1873 visitas
Are the following sentences true or false? The Earth's outermost layer is called the crust. Ocean trenches are long, narrow depressions in the floor of the ocean. The most common elements in the…
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Calculate. Measuring living things
EduBook Organización
- 1875 visitas
To measure living things as small as bacteria or viruses, we use nanometres (a billionth of a metre) and micrometres (a miliionth of a metre). What fraction of a millimetre are a micrometre and a…
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Answer. Mosses and ferns 2.2
EduBook Organización
- 1876 visitas
What are the main characteristics of mosses?