4. a. b. Earth is a great planet to live on because it has a wonderful...
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4. a. b. Earth is a great planet to live on because it has a wonderful atmosphere around it. (1) Explain the importance of the atmosphere to human's life. [3 Marks] (ii) The ionosphere is a very active part of the atmosphere, and it grows and shrinks depending on the energy it absorbs from the Sun. Describe the difference of ionosphere layer during night and day time. [3 Marks] The Sun is a huge hot gas where the energy is generated at the core region through a series of nuclear reactions called proton-proton chain. (i) Explain briefly the mechanism of energy transfer from the core into the photosphere. [2 Marks] (ii) Sunspots is a dark spot on the Sun surface. What is the impact of the sunspots to solar activity? [2 Marks] 4. a. b. Earth is a great planet to live on because it has a wonderful atmosphere around it. (1) Explain the importance of the atmosphere to human's life. [3 Marks] (ii) The ionosphere is a very active part of the atmosphere, and it grows and shrinks depending on the energy it absorbs from the Sun. Describe the difference of ionosphere layer during night and day time. [3 Marks] The Sun is a huge hot gas where the energy is generated at the core region through a series of nuclear reactions called proton-proton chain. (i) Explain briefly the mechanism of energy transfer from the core into the photosphere. [2 Marks] (ii) Sunspots is a dark spot on the Sun surface. What is the impact of the sunspots to solar activity? [2 Marks]
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i The atmosphere is vital for human life as it provides the necessary oxygen for respiration regulat... View the full answer
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