Module 8学霸新视野时文阅读-【拔尖特训】2023-2024学年九年级上册英语 外研社版

学霸新视野 时文阅读 ▶ “答案与解析”见P31 [热点素材](2023·原创) 天外来客———陨石 A firebal lit up the sky on the evening of Dec.15,2022 in Zhejiang. Some people were frightened, as the “firebal” was described as “very bright”. And it moved at high speed, according to viewers􀆳 comments. Qin Hongyi from the Zhejiang Astronomical Association thought of it as a “firebal” with brightness far beyond the ful moon, most likely to be a meteorite. Qin said the object is over 10 centimetres wide, and that it might not burn out completely during its fal. It was a time of Geminid meteor(双子座流星) shower activity then, so the object might come from it, reported The Paper. The remains of the “firebal” were later found in rural areas. Expert Zheng Yongchun at the Chinese Society of Space Research examined the remains and said that the meteorite has great value in investigating the earth􀆳s early history. According to NASA, scientists estimated (估计) that about 48.5 tons of materials, such as meteorites, fal on the earth each day. Almost al the materials are vaporized(蒸发) in the earth􀆳s atmosphere, leaving a bright trail caled “a shooting star”. Several meteors per hour can usualy be seen on any given night, which is often caled a meteor shower. How does a meteorite land on the earth? According to NASA, meteoroids, often seen as space rocks, enter the earth􀆳s atmosphere at high speed and burn up, and thus meteors occur. When a meteoroid survives a trip through the atmosphere and hits the ground, it􀆳s caled a meteorite. It is estimated