COSMIC PERSPECTIVE
8th Edition
ISBN: 9780134073842
Author: Bennett
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 7, Problem 34EAP
Comparative Planetology. Roles: Scribe (takes notes on the group’s activities), Proposer (proposes explanations to the group), Skeptic (points out weaknesses in proposed explanations), Moderator (leads group discussion and makes sure everyone contributes). Activity: This chapter advocates learning about how planets work by comparing the planets in general, as opposed to studying the individual planets in great depth. Compare this approach with any previous study you might have made of the planets—for example, in grade school or an earth sciences class—by making a list of advantages and any disadvantages of the comparative approach. Then describe in a few sentences how a comparative approach might be used in a completely different field, such as another branch of science or social science.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Impact Energy. Consider a comet about 2 kilometers across with a mass of 4 × 1012 kg. Assume that it crashes into Earth at a speed of 30,000 meters per second (about 67,000 miles per hour).
a. What is the total energy of the impact, in joules? (Hint: The kinetic energy formula tells us that the impact energy in joules will be 1 × m × v2, where 2 m is the comet’s mass in kilograms and v is its speed in meters per second.)
b. A 1-megaton nuclear explosion releases about 4 × 1015 joules of energy. How many such nuclear bombs would it take to release as much energy as the comet impact?
c. Based on your answers, comment on the degree of devastation the comet might cause.
In Table 2, there is a list of 15 planets, some of which are real objects discovered by the Kepler space telescope, and some are hypothetical planets. For each one, you are provided the temperature of the star that each planet orbits in degrees Kelvin (K), the distance that each planet orbits from their star in astronomical units (AUs) and the size or radius of each planet in Earth radii (RE). Since we are concerned with finding Earth-like planets, we will assume that the composition of these planets are similar to Earth's, so we will not directly look at their masses, rather their sizes (radii) along with the other characteristics. Determine which of these 15 planets meets our criteria of a planet that could possibly support Earth-like life. Use the Habitable Planet Classification Flow Chart (below) to complete Table 2. Whenever the individual value you are looking at falls within the range of values specified on the flow chart, mark the cell to the right of the value with a Y for…
Problem 4. Physical Features of the Giant Planets: Volume and Density of Jupiter (Palen, et. al. 1st Ed. Chapter 8 Problem 57 )
Jupiter is an oblate (Links to an external site.) planet with an average radius of 69,900 km, compared to Earth’s average radius of 6,370 km.
How many Earth volumes could fit inside Jupiter?
Jupiter is 318 times as massive as the Earth. How does Jupiter’s density compare (Links to an external site.) to that of Earth?
Chapter 7 Solutions
COSMIC PERSPECTIVE
Ch. 7 - Prob. 1VSCCh. 7 - Use the following questions to check your...Ch. 7 - Use the following questions to check your...Ch. 7 - Use the following questions to check your...Ch. 7 - What do we mean by comparative planetology? Does...Ch. 7 - What would the solar system look like to your...Ch. 7 - Briefly describe the overall layout of the solar...Ch. 7 - For each of the objects in the solar system tour...Ch. 7 - Briefly describe the patterns of motion that we...Ch. 7 - What are the basic differences between the...
Ch. 7 -
7. What do we mean by hydrogen compounds? In...Ch. 7 -
8. What are asteroids? What are comets? Describe...Ch. 7 - What kind of object in Pluto? Explain.Ch. 7 - What is the Kuiper belt? What is the Oort cloud?...Ch. 7 - Describe at least two “exceptions to the rules”...Ch. 7 - Describe and distinguish between space missions...Ch. 7 - Does it Make Sense? Decide whether the statement...Ch. 7 - Does it Make Sense? Decide whether the statement...Ch. 7 - Does it Make Sense? Decide whether the statement...Ch. 7 - Does it Make Sense? Decide whether the statement...Ch. 7 - Does it Make Sense? Decide whether the statement...Ch. 7 - Does it Make Sense? Decide whether the statement...Ch. 7 - Does it Make Sense? Decide whether the statement...Ch. 7 - Does it Make Sense? Decide whether the statement...Ch. 7 - Does it Make Sense? Decide whether the statement...Ch. 7 - Does it Make Sense? Decide whether the statement...Ch. 7 - Choose the best answer to each of the following....Ch. 7 - Choose the best answer to each of the following....Ch. 7 - Choose the best answer to each of the following....Ch. 7 - Choose the best answer to each of the following....Ch. 7 - Choose the best answer to each of the following....Ch. 7 - Choose the best answer to each of the following....Ch. 7 - Choose the best answer to each of the following....Ch. 7 - Choose the best answer to each of the following....Ch. 7 - Choose the best answer to each of the following....Ch. 7 - Choose the best answer to each of the following....Ch. 7 - Why Wait? To explore a planet, we often send first...Ch. 7 - Comparative Planetology. Roles: Scribe (takes...Ch. 7 - Prob. 35EAPCh. 7 - Patterns of Motion. In one or two paragraphs,...Ch. 7 - Solar System Trends. Study the planetary data in...Ch. 7 - Comparing Planetary Conditions. Use the planetary...Ch. 7 - Be sure to show all calculations clearly and state...Ch. 7 - Be sure to show all calculations clearly and state...Ch. 7 - Be sure to show all calculations clearly and state...Ch. 7 - Be sure to show all calculations clearly and state...Ch. 7 - Be sure to show all calculations clearly and state...Ch. 7 - Be sure to show all calculations clearly and state...Ch. 7 - Be sure to show all calculations clearly and state...Ch. 7 - Prob. 46EAPCh. 7 - Prob. 47EAPCh. 7 - Prob. 48EAPCh. 7 - Mars Missions. Go to the home page for NASA’s Mars...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- For which of the following reasons (select all that apply), is it useful/important to send rovers to other planetary bodies in our solar system? O a. The engineering innovations developed to produce successful/viable rovers and landers on other planets can help lead to developments in the technology used here on Earth that may have taken far more time to develop without the limitations provided by space travel to foreign worlds. O b. The data collected can help improve our understanding of the evolution/development of our solar system. O. Rovers/landers can be outfitted with various tools and equipment that can be used to inform of us of the geological histories of each of the planets they visit. O d. More direct probes of the planetary surface are possible to detect signs of the building blocks of life. O e. Rock samples can be used to calibrate our estimations of the age of the solar system.arrow_forwardcience 1 Technological advances in space exploration have O A. shown scientists that the ideas of the earliest astronomers were all fully correct. OB. taught scientists many new things about the Earth, but not other planets. OC. helped scientists modify and expand previous knowledge about the solar system. OD. revealed that the Moon is more capable of supporting life than Earth is. Reset Submit 0 of 10 Answered Session Timer: 5:46 here to search 立arrow_forwardKepler-444 is one of many stars with terrestrial planets that is over 10 billion a) What do you think the spectral type of Kepler-444 might be? b) How do stars of this spectral type end their lives? c) If evolution followed a similar course on a habitable pranet around a star similar to Kepler-444, it would be 5 billion years more advanced than we are. Let’s try to project our future and see what happens. In particular, suppose our civilization gets motivated enough to colonize another planet. Kepler indicates that most stars have potentially habitable (and colonizable) planets, so roughly how far away is the typical “nearest" planet? d) The New Horizons probe on its way to Pluto took 9 years to travel 30 AU. If we could send colony ships with the same average speed, roughly how long would it take to reach the typical nearest planet? уears old.arrow_forward
- Tutorial A radio broadcast left Earth in 1925. How far in light years has it traveled? If there is, on average, 1 star system per 400 cubic light years, how many star systems has this broadcast reached? Assume that the fraction of these star systems that have planets is 0.30 and that, in a given planetary system, the average number of planets that have orbited in the habitable zone for 4 billion years is 0.85. How many possible planets with life could have heard this signal? Part 1 of 3 To figure out how many light years a signal has traveled we need to know how long since the signal left Earth. If the signal left in 1925, distance in light years = time since broadcast left Earth. d = tnow - tbroadcast d = light years Submit Skip (you cannot come back)arrow_forwardhow do you compare us with people from the moon. Explain?arrow_forwardActivity #1. Compare and Contrast. Similarities and differences of Venus, Earth and Mars. Do this on a separate sheet of paper. 1. Compare and contrast the three (3) terrestrial planets using table 1. 2. Provide explanations for your observations using table 2. 3. Answer the following guide questions. Guide questions: 1. Does planet size affect gravity? 2. Why do you think Venus has the highest mean temperature among the three planets? 3. Is presence of water a primary factor for a planet to sustain life? Why or why not? 4. Based on your observations using table 2, what are the notable features that makes the earth the only habitable planet among the three terrestrial planets? 5. What conclusions can you make?arrow_forward
- 25. When Mars is 90 million km from Earth, a) How long would it take for a radio wave from a video camera mounted on the back of a Mars Rover to tell ground control on earth that the Rover is about to go over a cliff? b) How long would it take for a radio signal from Earth to reach the Rover saying "STOP". c) Why do our Mars Rovers have to be "intelligent" enough to figure out how to deal with obstacles themselves?arrow_forwardTutorial A radio broadcast left Earth in 1923. How far in light years has it traveled? If there is, on average, 1 star system per 400 cubic light years, how many star systems has this broadcast reached? Assume that the fraction of these star systems that have planets is 0.50 and that, in a given planetary system, the average number of planets that have orbited in the habitable zone for 4 billion years is 0.40. How many possible planets with life could have heard this signal? Part 1 of 3 To figure out how many light years a signal has traveled we need to know how long since the signal left Earth. If the signal left in 1923, distance in light years = time since broadcast left Earth. d = tnow - broadcast d = 97 97 light years Part 2 of 3 Since the radio signal travels in all directions, it expanded as a sphere with a radius equal to the distance it has traveled so far. To determine the number of star systems this signal has reached, we need to determine the volume of that sphere. V, = Vb…arrow_forwardHow is a habitable zone likely to change over time? a. get narrower b. move further from the star c. they aren't likely to changearrow_forward
- Suppose there were a planet in our Solar System orbiting at a distance of 0.5 AU from the Sun, and having ten times the mass and four times the radius of Earth. For reference, the Earth has a mass of 5.97 × 10*24 kg and a radius of 6,378 km. a)Calculatethe density of this hypothetical planet. b)Basedon your answer from part a), what do you think this planet would be made of? Explain your c)Dothis planet’s properties agree with the condensation theory for the formation of our Solar System? Why or why not?arrow_forward7. Complete the table below for the habitability of several solar system planets. Temperature can be hot, moderate, or cold. Amount of atmosphere can be thin, thick, or moderate. Liquid wa- ter amount can be lots, little, or none. Planet Venus Temperature Liquid Water Atmosphere Earth Marsarrow_forwardDescribe the Nebular Theory. Include A) what it is, B)what happened, and C) at least three lines of evidence to support it.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Kepler's Three Laws Explained; Author: PhysicsHigh;https://www.youtube.com/watch?v=kyR6EO_RMKE;License: Standard YouTube License, CC-BY