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El camino hacia la Primera Guerra Mundial
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La escalada de tensiones internacionales y la carrera de armamentos en los años que precedieron al estallido bélico fue tan evidente que muchos historiadores han calificado la Primera Guerra Mundial…
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Calculate. The speed of light
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The Sun's light takes approximately 8 seconds to reach the Earth. How far is the Sun from the Earth? d = km If the average distance from Pluto to the Sun is 5.9 billion kilometres, how long does it…
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Think about it. Heat and temperature
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Remember what you have studied in this section and answer the questions: What two physical phenomena are used to calibrate a thermometer and why? Why do we also use the name centigrade for the Celsius…
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True/False. Groups of waves on the electromagnetic spectrum
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Answer true or false: All electromagnetic waves can be seen. Ultraviolet rays have more energy than visible light. Ultraviolet rays have more energy than gamma rays. The different colours of visible…
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Light, shadow and penumbra
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3.1. Linear propagation of light Light is an electromagnetic wave that propagates in a straight line in all directions. Each of the directions that light propagates in is called a ray. This phenomenon…
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Unit 12: Waves. Light and sound
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Amplitude (n): the distance between a crest or a trough and the equilibrium position of a wave. converging lens (n): a lens which concentrates the light which passes through it. deafness (n): not being…
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Final self-evaluation T02 02 - Liberal revolutions and nationalist movem...
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Complete the following sentences with the missing words: bourgeoisie – marginalisation – liberal – Vienna – monarchy – financial – Constitution – bourgeoisie – 1834 – autocratic –…
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Final evaluation T05 03 - Society and industrialisation in 19th century ...
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What was the main objective of liberal agricultural reform?
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Final self-evaluation T05 04 - Society and industrialisation in 19th cen...
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Complete the following sentences with the missing words: In 19th century Spain, the structures of the Ancien where dismantled in favour of an economic model based on and . In the 19th century, the…
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