Recursos educativos human body página 127

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Introduction - The Earth, a Living Planet
EduBook Organización
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The existence of water and a protective atmosphere were key elements for the appearance of life on Earth. The first cells appeared 3.5 billion years ago. From these early forms of life, different groups…
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Video: Gaming can make a better world
Esl video Organización
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In this 20 minute video Jane McGonigal, who's been designing and researching video games for a decade, defines what kind of skills can be developed through online games. She has tried to apply them to…
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Self-evaluation 2 - Society and the environment
EduBook Organización
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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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Sound
EduBook Organización
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What is sound? Sound is produced when an object vibrates. We hear sound using our sense of hearing. We can hear sound from different sources: The human voice produces sound when we talk because the…
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Introduction - The Atmosphere
EduBook Organización
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The Earth is surrounded by a mixture of gases we call the atmosphere. The air we breathe is part of the atmosphere. The atmosphere is composed of a series of layers. The most important layer is the…
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Video: Blowing in the Wind
Esl video Organización
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This song was written by Bob Dylan and here is performed by Alanis Morissette. We can compare it with an older version by Peter, Paul and Mary. It's a protest against war and indifference. It may open a…
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The nature of light
EduBook Organización
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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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End-of-unit evaluation - The Atmosphere
EduBook Organización
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The Earth is surrounded by a mixture of gases we call the atmosphere. The air we breathe is part of the atmosphere. The atmosphere is composed of a series of layers. The most important layer is the…
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From childhood to old age
EduBook Organización
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After human beings are born, they grow and develop in different stages. These stages are childhood, puberty and adulthood. Childhood Girls and boys are considered babies until they are one year old.…
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Video: Save the Planet
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In this 7 minute video George Carlin, a comedian, gives an alternative, hilarious view on ecology: it's another human attempt to interfere with nature. His talk about evolution has an ironical…
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