e.) Both c. and d. are correct 98.) By what processes do the Sun and other stars
ID: 294333 • Letter: E
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e.) Both c. and d. are correct 98.) By what processes do the Sun and other stars produce huge amounts of energy as light and heat a.) Stars are huge balls of burning coal b.) Nuclear fusion c.) Nuclear fission d.) Radioactive decay e.) Gravitational differentiation 99.) Since 1995, scienti sts have confirmed the detection of overextrasolar planets orbiting distant stars. a.) 100 b.) 1000 c) 3600 d.) One million e.) Wrong! We have never detected planets beyond our own Solar System 100.) What is the minimum size (diameter) of an asteroid which could end civilization if it hit the Earth? a.) 10 meters b.) 100 meters c.) 1 Kmm d.) 100 Km e.) 1000 Km 101.) Meteorites are: Mea) Rocks that fall out of the sky and land on the Earth y in composition, although some are metallic or a mixture of metal and minerals b.) Primarily ston c.) Found all over the world d.) Mainly pieces of asteroids, although some are from Mars or the Moon e.) All of the aboveExplanation / Answer
98. Sun and other Star produce huge amounts of energy as light and heat due to the Nuclear fusion. Nuclear fusion is a reaction in which two or more atomic nuclei (consisting proton and neutron at the center of an atom) come close enough to form one or more atomic nuclei and subatomic particles. The Sun is also a Star which generates enegy by Nuclear fusion of hydrogen into helium. In the sun had both hydrogen and helium present which produce enegy by nuclear fusion process. In this reaction four hydrogen atoms will close enough to fuse together into a single atoms. Due to this fusion mass is converted into energy.
99. Since 1995, Scientist have confirmed the detection of over 3600extrasolar planetsorbiting distant stars. Extrasolar planet also called exoplanet. Those planetary body that is outside the solar system and that usually orbit a star other then the Sun are known as Extrasolar planets. First extrasolar planets discovered in 1992. Some techniques which are used to detect extrasolar planets are pulsation timing, microlensing, and direct imaging. But the most important and successful techniques is the radial velocity method for the detection of extrasolar planets.
100. The minimum size (diameter) of an asteroid which could end civilization if it hit the Earth is 100 km.
101. The all options are satisfied the defination of Meteorites.
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