Our Solar System consist of two distinctly different types of planets. A. Describe how these planets differ in their general characteristics. B. Explain the cause of these differences
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Our Solar System consist of two distinctly different types of planets.
A. Describe how these planets differ in their general characteristics.
B. Explain the cause of these differences
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- Which of the following statements accurately describes our current understanding of the solar system? a. There are no metals in the solar system beyond Jupiter and its orbit. b. Terrestrial worlds are so small because their large atmospheres were stripped away in time by Jupiter. c. Jupiter and Saturn are made of strictly a combination of hydrogen and helium, and both objects lack a planetary core. d. Various ices can contribute to the mass of planetary cores if we are at a great enough distance from the sun.6 Why isn't there a planet where the asteroid belt is located? A The temperature in this portion of the solar nebula was just right to prevent rock from sticking together. B C D There was too much rocky material to form a terrestrial planet, but not enough gaseous material to form a jovian planet. There was not enough material in this part of the solar nebula to form a planet. Gravitational tugs from Jupiter prevented material from collecting together to form a planet. E A planet once formed here, but it was broken apart by a catastrophic collision.Due to tidal forces, a moon orbiting a planet will eventually a always keep the same side toward the planet b collide with the planet c break up into a number of fragments d develop a warmer climate as time goes on Jupiter's moon Io is very volcanically active, which means it has plate tectonics. a. true b. false
- Some planets have very strong magnetic fields. What features must a planet have to cause this? a.both rapid rotation and a conducting liquid core b.only a rapid rotation c.only a liquid conducting core d.both a rapid rotation and a solid metallic core e.only a metallic coreQUESTION 3 The surface of Venus receives a. a lot more sunlight than the surface of the Earth b. much less sunlight than the surface of the Earth c. about as much sunlight as the surface of the Earth QUESTION 4 Venus has very low surface wind speed because a. the greenhouse effect makes the surface temperature nearly uniform b. it has a very thin atmosphere c. the thick clouds don't allow for much convection in the atmosphere d. it doesn't have a large moonPC Why are there two different types of planets in the solar system? O The amount of material available to form planets was greater in the outer reaches of the protoplanetary disk. O Rocky material could not collect and form planets beyond the asteroid belt. O The nebular cloud from which the solar system formed had very little gas. O The sun's heat allowed only rocky planets to form in the inner portion of the solar system. 1
- The rotation of the planets around the sun is governed by: A. The gravitational field of the sun. B. The gravity of the stars. C. The heat energy of the sun. D. The gravity of the other planets of the solar system. Kelper's second law relates between them: O A. The time period of rotation of the orbiting planet around the sun and the average distance of the planet to the sun. OB. The time period of rotation of the orbiting planet around the sun and the average distance of the planet to the earth. C. The time period of rotation of the orbiting planet around the sun and the average distance of the planet to the moon. OD. The time period of rotation of the orbiting planet around the earth and the average distance of the planet to the sun.Imagine that you visit a planet orbiting another star and discover that it is heavily cratered, but its small moon is nearly crater free. Why would that be a surprise? Speculate about what might have happened to those objects.Some astronomers argue that Jupiter and Saturn are unusual, while other astronomers argue that all planetary systems should contain one or two such giant planets. What do you think? Support your argument with evidence.
- Describe your approach to calculation of the gravitational field strength on a planet with a given size (e.g. diameter) and known escape velocity. a. Use Newton's law of universal gravitation. b. Use Newton's 3rd law. c. Use Newton's 1st law. d. Use law of conservation of energy. e. Use Newton's 2nd law.1. Suppose you have an Oort cloud comet on an orbit with pericenter distance 10,000 AU, and apocenter distance 20,000 AU. a. What are the semi-major axis and eccentricity of the orbit? b. What are the specific energy (energy per unit mass), and specific angular momentum (angular momentum per unit mass) of the comet? c. How fast is the comet moving at apocenter (relative to the Sun)?Describe your approach to the calculation of the escape velocity of a satellite from a planet. a. Use Kepler's 3rd law. b. Use the law of conservation of energy. C. Use Newton's 1st law.