Problem 1RCC: How many known planets are in our solar system? Problem 2RCC: What dwarf planet was downgraded from planetary status in 2006? Problem 3RCC: How are the outer planets different from the inner planets aside from their location? Problem 4RCC: Why does a nebula spin faster as it contracts? Problem 5RCC: According to the nebula theory, did the planets start forming before or after the Sun ignited? Problem 6RCC: What happens to the amount of the Suns mass as it burns? Problem 7RCC: What are sunspots? Problem 8RCC: What is the solar wind? Problem 9RCC: How does the rotation of the Sun differ from the rotation of a solid body? Problem 10RCC Problem 11RCC: Why are the days on Mercury very hot and the nights very cold? Problem 12RCC: What two planets are evening or morning stars? Problem 13RCC: Why is Earth called the blue planet? Problem 14RCC: What gas makes up most of the Martian atmosphere? Problem 15RCC: What evidence tells us that Mars was at one time wetter than it presently is? Problem 16RCC: What surface feature do Jupiter and the Sun have in common? Problem 17RCC: Which move faster Saturns inner rings or the outer rings? Problem 18RCC: How tilted is Uranuss axis? Problem 19RCC: Why is Neptune bluer than Uranus? Problem 20RCC: Why doesnt the Moon have an atmosphere? Problem 21RCC: Where is the Sun located when you view a full Moon? Problem 22RCC: Where are the Sun and the Moon located at the time of a new Moon? Problem 23RCC: Why dont eclipses occur monthly, or nearly monthly? Problem 24RCC: How does the Moons rate of rotation about its own axis compare with its rate of revolution around... Problem 25RCC: Between the orbits of what two planets is the asteroid belt located? Problem 26RCC: What is the difference between a meteor and a meteorite? Problem 27RCC: What is the Kuiper belt? Problem 28RCC: What is the Oort cloud, and what is it noted for? Problem 29RCC Problem 30RCC: What causes comet tails to point away from the Sun? Problem 31TIS Problem 32TIS: Why does the evolution of life probably require the presence of a liquid on a planet? Problem 39TC: Rank these planets in order from longest to shortest year; a Mercury, b Venus, c Earth. Problem 40TC: Rank these planets in order of increasing number of moons; a Mars, b Venus, c Earth. Problem 41TC: Rank in order of increasing average density; a Jupiter, b Saturn, c Earth. Problem 42TC: Rank in order of increasing pressure at the centre of each planet: a Jupiter, b Saturn, c Earth. Problem 43TC: Rank in order of decreasing number of people who have seen a: a solar eclipse, b lunar eclipse, c... Problem 44TC: Rank in order of increasing average distance from the Sun: a Kuiper belt objects, b asteroids, c... Problem 45TS: Knowing that the speed of light is 300,000km/s, show that it takes about 8min for sunlight to reach... Problem 46TS: How many days does sunlight take to travel the 50,000AU from the Sun to the outer reaches of the... Problem 47TS Problem 48TS: The nearest star to our Sun is Alpha Centauri, which is about 4.4light-years away. Assume that it... Problem 49TS: If the Sun were the size of a beach ball, Earth would be the size of a green pea 110m away. Show... Problem 50TE Problem 51TE: According to the nebular theory, what happens to a nebula as it contracts under the force of... Problem 52TE Problem 53TE: When a contracting ball of hot gas spins into a disk shape, it cools. Why? Problem 54TE: If the Earth didnt spin on its axis, but still revolved around the Sun, how long would a day be on... Problem 55TE: Which tends to be lager: a star or a nebula? Which tends to be denser? Which tends to be easier to... Problem 56TE Problem 57TE Problem 58TE: Does the Sun have a south and north magnetic pole? Problem 59TE: Explain why the radiation zone is more dense than the convection zone. Problem 60TE Problem 61TE: Explain how energy is transported outward through the convection zone. Problem 62TE: Why does Venus, not Mercury, have the hottest surface of any planet in the solar system? Problem 63TE: The greenhouse effect is very pronounced on Venus but doesnt exist on Mercury. Why? Problem 64TE: What is the cause of winds on Mars and also on almost every other planet? Problem 65TE: Why is there so little wind on the surface of Venus? Problem 66TE: If Venus were somehow transported into the habitable zone, would conditions once again become... Problem 67TE: Mercury and Venus are never seen at night, straight up toward the top of the sky. Why not? Problem 68TE: As evidenced in the photos of Figure 28.17, the sky on Mars is not blue as it is on Earth. Why not? Problem 69TE: The exteriors of the outer planets are gaseous, but their interiors are mostly liquid. Why? Problem 70TE: What is the major difference between the terrestrial and Jovian planets? Problem 71TE: What does Jupiter have in common with the Sun that the terrestrial planets don't? What... Problem 72TE: When it comes to celestial bodies, such as planets and stars, why doesn't a larger size necessarily... Problem 73TE: Why are the seasons on Uranus different from the seasons on any other planet? Problem 74TE: Do all moons orbit in the same direction as the spin of its planet? Problem 75TE: Jupiters major moons keep getting stretched in different directions by tidal forces. What force... Problem 76TE: Giant tube worms living at the bottom of the ocean thrive in total darkness because their energy... Problem 77TE: When the Moon rises at sunset, its phase is always full. Why? Problem 78TE: Earth rotates much faster than Venus. How does the giant impact theory of the Moon account for this... Problem 79TE: Why are many craters evident on the surface of the Moon but not on the surface of the Earth? Problem 80TE: Why is there no atmosphere on the Moon? Defend your answer. Problem 81TE: Is the fact that we see only one side of the Moon evidence that the Moon spins or that it doesn't?... Problem 82TE: Photograph a shows the moon partially lit by the sun. Photograph b shows a Ping-Pong ball in... Problem 83TE: We always see the same face of the Moon because the rotation of the Moon on its axis matches the... Problem 84TE: If we never see the back side of the Moon, would an observer on the back side of the Moon ever see... Problem 85TE: In what alignment of Sun, Moon, and Earth does a solar eclipse occur? Problem 86TE: In what alignment of Sun, Moon, and Earth does a lunar eclipse occur? Problem 87TE: What does the Moon have in common with a compass needle? Problem 88TE: If you were on the moon and you looks up and saw a full earth, would it be nighttime or daytime on... Problem 89TE: If you were on the moon and you looks up and saw a new earth, would it be nighttime or daytime on... Problem 90TE: Earth takes 365.25 days to revolve around the Sun. If Earth take this same amount or time to spin... Problem 91TE: Astronomers using land-based telescopes must contend with glare from the light from moonlight for... Problem 92TE: Nearly everybody has witnessed a lunar eclipse, but relatively few people have seen a total solar... Problem 93TE: Because of the Earths shadow, a partially eclipsed moon looks like a cookie with a bite taken out of... Problem 94TE: Which of the three orientations of the moon at sunset, shown above, is most proper? Problem 95TE: Assuming the above illustration depicts a sunset, by the next sunset will the Moon appear arther... Problem 96TE: Is the sailboat seen in the above illustration sailing at a location closer to the North Pole or... Problem 97TE: Where and how would the Moon be positioned if the scene in the above illustrations were close to the... Problem 98TE: If an asteroid and a comet of equal mass were on a collision course towards Earth, the asteroid... Problem 99TE: In what sense is Pluto a potential comet? Problem 100TE: Smaller chunks of asteroids are sent hurling toward Earth much more frequently than larger chunks of... Problem 101TE: Why are meteorites so much more easily found in Antarctica than in other continents? Problem 102TE: A meteor is visible only once, but a comet may be visible at regular intervals throughout its... Problem 103TE: What would be the consequence of a comets tail sweeping across the Earth? Problem 104TE: Chances are about 50-50 that in any night sky there is at least one visible comet that has not been... Problem 105TE: If the bulk of water on Earth didnt come from comets nor asteroids, then where did it come from? Problem 106TDI: Project what human civilization would be like if Earth had no moon. Problem 107TDI: What are the chances that microbial life-forms might one day be found elsewhere in our solar system?... Problem 108TDI: Unmanned space probes are a very cost-effective and safe means for exploring our solar system and... Problem 1RAT Problem 2RAT: The solar system is like an atom in that both a are governed principally through the electric force.... Problem 3RAT: The nebular theory is based on the observation that the solar system a follows patterns indicating... Problem 4RAT: When a contracting hot ball of gas spins into a disk shape, it cools faster due to a increased... Problem 5RAT Problem 6RAT: Compared to your weight on Earth, your weight on Jupiter would be about a. 3000 times as much. b.... Problem 7RAT: When the Moon assumes its characteristically thin crescent shape, the position of the Sun is a... Problem 8RAT: When the Sun passes between the Moon and Earth, we have a a lunar eclipse. b a solar eclipse. c met... Problem 9RAT: Asteroids orbit a the Moon. b Earth. c the Sun. d all of these. e none of these. Problem 10RAT: With each pass of a comet about the Sun, the comets mass a remains virtually unchanged. b actually... format_list_bulleted