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Giáo trình Traslation_5_3

Tham khảo tài liệu 'giáo trình traslation_5_3', tài liệu phổ thông, tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 59 m0c é nguy h1 ĩnh h-eng trùc tiÕp lan ng-êi sõ dông tuú thuéc vụo hụm l-ĩng thuèc -ĩc sõ dông. Passage 2 SUNSPOTS Our program is about the Sun and how activity on it called sunspots can affect us. Before we continue however we must warn you not to look directly at the Sun in an effort to see what is happening. Looking directly at the Sun can cause severe damage to the eyes including blindness. Special equipment is needed to safely see sun- spots. Our Sun is a ball of gases at the center of our solar system 1. It is the largest object in the system. It includes about 98 of all matter in our solar system. The Sun is large enough to hold inside of it more than one million planets the side of Earth. The distance from the Earth to the Sun is one hundred fifty million kilometers. Even at this great distance the Sun s heat is felt in all areas of the Earth. Such heat is created by solar energy. Solar energy comes from the deep inside the Sun. In the center of the Sun the temperature and pressure are so great that nuclear reactions 2 take place. These nuclear reactions produce great amounts of energy. The energy is carried to the surface of the Sun where it becomes light and heat. Energy produced in the center of the Sun takes a million years to reach its surface. Without the continuing heat the Sun all life on the Earth would quickly die. 60 SOLAR STORMS A number of events take place on and above the surface of the Sun. Violent events are called solar storms. Solar storms usually take place above areas called sunspots. The sunspots appear black when they are seen though special devices that permits scientists to safely look at the Sun. Some solar storms are seen as bright explosions 3 of light that release 4 huge amount of the Sun s energy. Others create huge amount of gas that reach far into space and then return to the surface of the Sun. Solar storms also create coronal 5 mass ejections. Huge amount of energy are released far into space. All of these events are part