| THE ATMOSPHERE |
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The atmosphere is a thin layer of gas that surrounds the Earth. Thanks to the atmosphere, there exists life on our planet. Life exists because of the following fundamental features of the atmosphere: -It maintains a constant tempurature. -It protects us from harmful solar radiation. -It produces the weather patterns that determine and condition life. -It contains the gases that allow respiration and photosynthesis. You must do the following activities in your notebook. You can find the answers in the links on the right: 1º.- What is the composition of the atmosphere? 2º.- Draw a diagram of the atmosphere´s structure. 3º.- Write the name of the layer or part of the atmosphere that answers the riddles: a) I am where most of the weather occurs. Who am I? b) I contain most of the ozone layer. Who am I? c) I protect the earth from ultraviolet rays given off by the sun. Who am I? d) I am where radio waves are bounced back to the earth's surface. Who am I? e) Artificial satellites orbit the earth here. Who am I? f) I protect the earth from meteoroids. Who am I? g) I extend to an average altitude of about 12 km. Who am I? h) I am the layer that interacts with living things. Who am I? i) I extend to an alititude from about 50 km to 80 km. Who am I? j) Electrically charged particles called ions are found here. Who am I? |
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