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Did you know?
EduBook Organización
- 1670 visitas
Low clouds are clusters of tiny drops of water. At high altitudes, water vapour cools and condenses into liquid water.
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Explain. Atoms and molecules 01
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- 1674 visitas
Does oxygen have molecules? What are they like? Does water have molecules? Compare them.
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Answer. Substances 01
EduBook Organización
- 1658 visitas
If a spring is a solid, why does it change shape? Give more examples of solids that can change shape without breaking.
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Answer. Materials 02
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List the names of three materials that have the following properties: hardness, elasticity, thermal conductivity, water resistance, fragility.
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Choose. The Solar System
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- 1662 visitas
Choose the correct answer to each question: What is there between Mars and Jupiter? Where does the geocentric theory say that the Earth is located? How are the orbits of planets different from those of…
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Answer. Moon, Earth and Sun 03
EduBook Organización
- 1659 visitas
Why, when it is summer at the North Pole, it is winter at the South Pole?
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Final self-evaluation 03 - The Earth's Crust
EduBook Organización
- 1676 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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Final self-evaluation 9.03 - The Plant Kingdom
EduBook Organización
- 1660 visitas
Complete the following sentences with the missing words: are located on the underside of the fronds of ferns. Mosses and ferns use both sexual and reproduction. are non-vascular plants. Mosses are very…
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Final evaluation 4 - The Animal Kingdom (II). Vertebrates
EduBook Organización
- 1666 visitas
Review the life cycle of the frog and answer the questions: Why do frogs lay eggs in the water? Do tadpoles and adult frogs have the same system of respiration? Can we consider tadpoles to be adult…
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Final self-evaluation 01 - The Earth's climate zones
EduBook Organización
- 1671 visitas
Complete the sentences with the correct words: The Earth can be divided into a number of zones with their own characteristics. The difference between the properties of one climate zone and another is…
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