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Which bodies float on water?
EduBook Organización
- 1843 visitas
Cork is a material that floats on water. Other substances, such as stones, sink. This phenomenon is related to the different densities of the materials. If the density of an object is less than the…
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Final evaluation 5 - Matter: Mass, Volume and Density
EduBook Organización
- 1843 visitas
Decide which sentences are false and correct them. The SI unit of measurement for length is the kilomtre. The unit of measurement for surface area is derived from the unit for length. The unit for…
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The extinction of the dinosaurs
EduBook Organización
- 1842 visitas
In 1980, American scientists proposed that the cause of the extinction of the dinosaurs, which occurred about 65 million years ago, was the result of a meteorite hitting Earth. According to this…
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Answer. Aspects of the Solar System 04
EduBook Organización
- 1843 visitas
What is the relationship between planets and satellites? What is the difference between them?
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Answer. Moon, Earth and Sun 04
EduBook Organización
- 1847 visitas
Explain why summer is warmer in Europe when the Earth is at its farthest point from the Sun.
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Answer. The air and its components 4
EduBook Organización
- 1844 visitas
Where does the water vapour in the air we breathe come from?
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Answer. Pollution, the environment and health 3
EduBook Organización
- 1840 visitas
What causes an increase in the natural greenhouse effect?
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Answer. Water 9
EduBook Organización
- 1840 visitas
Does everyone on the planet have access to clean water?
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Final self-evaluation 4 - The Hydrosphere
EduBook Organización
- 1837 visitas
Complete the text with the missing words: Water is a very good of all types of solid, and gaseous substances. Living beings absorb many substances for life because they are dissolved in . At the same…
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