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Summaries - Waves. Light and sound
EduBook Organización
- 1846 visitas
1. Waves An oscillatory or vibratory motion takes place around a central position. It produces the same amount of movement on both sides of this position. A wave is the transmission of an oscillatory or…
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Self-evaluation 2 - Society and the environment
EduBook Organización
- 1772 visitas
In which section of this unit can you find the following statements: The excessive pollution of the atmosphere can cause acid rain. A global rise in temperature is, in part, caused by human activity.…
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The antartic enviroment
EduBook Organización
- 1666 visitas
A thick sheet of ice (average of 2400 m) completely covers Antarctica. The only land visible is the mountains. The ice in Antarctica is 90% of all the ice in the world. Strong winds and very low…
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Inflation and its causes
EduBook Organización
- 1638 visitas
Inflation is the general rise in the price of a country's goods and services. It appears when there is an imbalance between supply and demand. The main causes of inflation are an increase in the…
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Learn. Reading graphs
EduBook Organización
- 1599 visitas
Graphs and charts are helpful tools in geography because they provide us with a lot of information very quickly. It is very important to be accurate and precise when reading a graph, and to explain as…
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True/false. European industry
EduBook Organización
- 1573 visitas
Are the following statements true or false? Industry employs 25% of the EU's active working population. The Ruhr valley is the UK's main industrial area. Fragmentation in the EU has created…
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Match. Electrical circuits
EduBook Organización
- 1573 visitas
Match the definitions to the terms: The conductor that transports the current to your house, then to the socket and finally to the light bulb. You insert the plug into this connection to the electrical…
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True / False. Properties of light
EduBook Organización
- 1567 visitas
Are these sentences true or false? Light sources produce light. There are natural light sources and artificial light sources. We can convert light from the Sun into electrical energy using solar panels.…
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Before you start - Light and sound
EduBook Organización
- 1561 visitas
Didactic objectives Identify light as a type of energy. Describe how light is produced. Understand the difference between transparent, translucent and opaque objects. Distinguish between the reflection…
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Learn. Study a 19th century industrial city
EduBook Organización
- 1538 visitas
What do we do? The drawing below shows a city and a factory in the 19th century. Look at it carefully and answer the following questions: First look at the factory. What does it produce? What types of…