A. Planets are small bodies. B. Planets are stars. C. Planets are large bodies that move around stars. D. Planets are comets. 相关知识点: 试题来源: 解析 C。这句话的意思是行星是围绕恒星运行的大天体,答案是 C。A 选项表示行星是小天体;B 选项表示行星是恒星;D 选项表示行星是彗星,均不符合...
What is the name of the force that keeps the planets in orbit around the sun? A. Gravity B. Magnetism C. Electricity D. Friction 相关知识点: 试题来源: 解析 A。本题考查对天体运行的了解。引力使行星围绕太阳运行,所以答案是 A。B 选项磁力不是使行星围绕太阳运行的主要力量;C 选项电力不是使...
Question: What is planetary habitability? Habitat: Habitat is the natural place where an organism lives and grows in the natural environment. The habitat of organisms supports the survival and reproduction of certain species. Answer and Explanation: ...
Planets are not the sole celestial objects that can have moons. Asteroid243 Idahas been known since 1994 to have a moon in orbit around it. Why do the gas giants have more moons? If you discount Mars and Pluto (a planet for this explanation) for the moment, then all the Gaseous plane...
Answer and Explanation:1 There are seven f orbitals, six of which are formed of six 'lobes' each, centered at the nucleus, while the remaining orbital is composed of two lobes... Learn more about this topic: Electron Orbitals | Definition, Subshells & Shapes ...
The sun, Earth and the moon are aligned, but because the moon’s orbit is not exactly in the same plane as Earth’s orbit around the sun, they rarely form a perfect line. When they do, we have a lunar eclipse as Earth's shadow crosses the moon's face. Waning gibbous: More than ...
21:39 What is that funny loop in the orbit of Mars? This is known as retrograde motion. This arises because the orbital velocity of Earth (about 30 km/sec) is a little bit larger than that of Mars (about 24 km/sec). So, in opposition (when Mars is in the opposite position in th...
Which of these are planets that are visible to the naked eye from Earth's surface? a. the Moon b. Mars c. Uranus d. Mercury e. Pluto f. Jupiter g. Saturn h. Neptune i. Venus The disk-shaped region around the sun that contains the orbit of ...
Which planet has the most eccentric orbit? What planet is so light that it could float in water? What do the outer planets have in common? What is the planet Ceres? What planet has the shortest day? What is the nearest extrasolar planet to Earth?
Mostthings in space move roughly in a circle, so centripetal force plays a big role in space exploration. It governs how satellites orbit our planet, how the moon orbits Earth, and how the rest of the solar system's planets orbit the sun. ...