The Cosmic Perspective (9th Edition)
9th Edition
ISBN: 9780134874364
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Chapter 7, Problem 1EAP
What do we mean by comparative planetology? Does it apply only to planets?
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We need to create a scale model of the solar system (by shrinking the sun down to the size of a basketball or ~30cm). First, we will need to scale down actual solar system dimensions (planet diameters and average orbital radiuses) by converting our units. There are two blank spaces in the table below. We will effectively fill in the missing data in the next set of questions. Use the example below to help you.
Example: What is the scaled diameter of Mercury if the Sun is scaled to the size of a basketball (30 cm)?
The actual diameter of Mercury is 4879 km
The Sun's diameter is 1392000 km
If the Sun is to be reduced to the size of a basketball, then the conversion we need for this equation will be:
30cm1392000km
Here is how we run the conversion: 4879km×30cm1392000km=0.105cm or 0.11cm if we were to round our answer.
This means that if the sun in our model is the size of a basketball, Mercury is the size of a grain of sand. We can also see by looking at the table, that we would…
Given what you've learned about the solar nebula idea, what do you believe the likelihood is of discovering livable planets in other solar systems? Learn more about this search by visiting NASA's Kepler mission and writing a half-page overview of the project.
Why Wait? To explore a planet, we often send first a flyby, then an orbiter, then a probe or a lander. There’s no doubt that probes and landers give the most close-up detail, so why don’t we send this type of mission first? For the planet of your choice, based just on the information in this chap- ter, give an example of why such a strategy might cause a mission to provide incomplete information about the planet or to fail outright.
Chapter 7 Solutions
The Cosmic Perspective (9th Edition)
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 - Prob. 35EAPCh. 7 - Prob. 37EAPCh. 7 - Patterns of Motion. In one or two paragraphs,...Ch. 7 - Solar System Trends. Answer the following based on...Ch. 7 - Comparing Planetary Conditions. Use both Table 7.1...Ch. 7 - Prob. 41EAPCh. 7 - Size Comparisons. How many Earths could fit inside...Ch. 7 - Asteroid Orbit. Ceres, the largest asteroid, has...Ch. 7 - Density Classification. Calculate the density of a...Ch. 7 - Comparative Weight. Suppose you weigh 100 pounds....Ch. 7 - New Horizons Speed. On its trajectory to Pluto,...Ch. 7 - Planetary Parallax. Suppose observers at Earth’s...
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- Earlier in this chapter, we modeled the solar system with Earth at a distance of about one city block from the Sun. If you were to make a model of the distances in the solar system to match your height, with the Sun at the top of your head and Pluto at your feet, which planet would be near your waist? How far down would the zone of the terrestrial planets reach?arrow_forwardWhat is comparative planetology and why is it useful to astronomers?arrow_forwardHow do terrestrial and giant planets differ? List as many ways as you can think of.arrow_forward
- How does the solar nebula theory explain the orbits of the major planets? Dwarf planets? Does it explain the rotations of the planets? Why or why not?arrow_forwardLet's use Kepler's laws for the inner planets. Use the following distances from the sun to calculate the orbital period for each of these planets. Express your answer in terms of Earth years to two significant figures. Note: Use Kepler's law directly. Don't just Google the answers, as they will be a little bit different. When you have calculated them, only submit the value for Mercury. Planet Distance from the sun Period of orbit around the sun Earth 150 million km ___ Earth years Mercury 58 million km ___ Earth years Venus 108 million km ___ Earth years Mars 228 million km ___ Earth yearsarrow_forwardHow do the planets discovered so far around other stars differ from those in our own solar system? List at least two ways.arrow_forward
- Why do we say that Neptune was the first planet to be discovered through the use of mathematics?arrow_forwardIf the solar nebula hypothesis is correct, do you think there are more planets in the Universe than stars? Why or why not?arrow_forwardIn 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…arrow_forward
- Pretend you are a NASA executive or a legislator. Design a new mission in our solar system. Pick any object in the system and decide whether you want to send an orbiter, a lander, a rover, some combination or those, a manned mission, or something else. What interests you about this object? What science questions can we answer? In basic terms, what kind of scientific instruments might you want to include on your mission? Justify your decisions with what you know about the scientific method, astronomy techniques, and the object itself from this class.arrow_forwardHow can sciences be integrated in designing a water arc? Elaborate in complete sentences. i want a lot of reasons not only 1 reason like gravity or physics i want you to provide me with more reasons please and as it said Elaborate in complete sentencesarrow_forwardYou are given the following data from observations of an exoplanet: Using Kepler’s Third Law (r3 = MT2 where M is the mass of the central star) find the orbital radius in astronomical units of this planet. M = 1.5 times the mass of the sun. Remember to convert days to years using 365.25 as the length of a year in days. What is the semimajor axis of this planet in AU? - Knowing the orbital radius in both kn and AU, use the value in km to find the circumference of the orbit, then convert that to meters. (Assume the orbit is a perfect circle). - Knowing the orbital circumference and the period in days, convert the days to seconds (multiply by 86,400) and find the orbital velocity in m/s - With that orbital velocity, the radius of the orbit in meters, find the centripetal acceleration of our exoplanet - Knowing the acceleration that our planet experiences, calculate the force that the host star exerts on the planet - Knowing the force on the planet, the orbital radius, and the mass of the…arrow_forward
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