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Effects of heat on bodies (II)
EduBook Organización
- 1832 visitas
4.1. Expansion The term expansion refers to the increase in a substance's volume. This causes a reduction in the substance's density. The opposite effect is called contraction. The particles…
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The nature of light
EduBook Organización
- 1847 visitas
2.1. What is light? Light has an undulatory nature; this means it is made up of waves. Visible light (that can be seen by the human eye) belongs to a larger group of waves called electromagnetic waves.…
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Final Autoevaluation T12 01 - Waves. Light and sound
EduBook Organización
- 1844 visitas
Answer these questions: What two different waves can be classified? How can there be two different types of light sources. List some examples of linear propagation of light.
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Final Autoevaluation T12 10 - Waves. Light and sound
EduBook Organización
- 1846 visitas
Answer the questions: What are the effects of continually listening to very loud sounds? What is noise pollution? How can we reduce noise?
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Identify. Phases of the colonial economy
EduBook Organización
- 1844 visitas
Look at the diagram and do the following activity: Choose the correct phase for each number:
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Final evaluation T06 09 - The age of imperialism
EduBook Organización
- 1 lo usan
- 1650 visitas
Why do many historians think that imperialism was an economic necessity in the development of capitalism?
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The Fascists in action
EduBook Organización
- 1853 visitas
At midnight (…) lorries arrived in these small towns. Inside the lorries were Fascists looking for the houses of the agricultural union leaders, and the small offices where the workers' leaders…
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Civilian resistance to Nazism
EduBook Organización
- 1835 visitas
You must not go to work in Germany or Norway. If you work for the Germans, you must work slowly and badly. Destroy any tools or machines that are useful for the Germans. Delay all transport that is…
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The alternation of power
EduBook Organización
- 1842 visitas
In recent years, political power in the government of Spain has alternated between two parties: the Socialist Party and the Popular Party. 3.1. The Socialist era (1982-1996) In the 1982 elections, the…