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Final evaluation 4 - Matter: Mass, Volume and Density
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Describe how weighing scales work.
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Answer. The Solar System 05
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Every year, around 10th August, when the Earth crosses the orbit of Comet 109/P Swift-Tuttel, a meteorite shower known as the Perseids or the Tears of Lawrence is produced. Why does this phenomenon…
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Final self-evaluation 10 - The Universe and our Solar System
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Are the following sentences true or false? A medium-sized star ends its life cycle as a black dwarf. Large, dense stars end their life cycles as white dwarfs. Large, dense stars explode and become…
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Final evaluation 10 - The Universe and our Solar System
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- 1757 visitas
Write the names of three satellites of three different planets.
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Answer. The Earth, a planet of the Solar System 02
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In which direction does the Earth turn on its axis?
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The depletion of the ozone layer
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- 1761 visitas
In the 80s, a decrease in the thickness of the ozone layer over Antarctica was detected. This rate of decrease has continued. Scientists believe that the original concentrations of ozone will be…
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Melting glaciers
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In recent decades glaciers and ice caps, which contain most of the fresh water on the planet, have decreased in size. Why do you think many glaciers have reduced in size? What could happen if all the…
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Final evaluation 8 - The Hydrosphere
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What is the difference between a water purification plant and a sewage treatment plant?
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Answer. Rocks 4.6
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What is the difference between limestone formed by chemical precipitation and limestone of organic origin?
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Final self-evaluation 05 - The Earth, a Living Planet
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Are the following sentences true or false? Biomolecules are mostly made up of metallic elements. Proteins are used by the body to repair tissue. Nucleic acids are necessary for reproduction.…
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