21st Century Astronomy 6E
6th Edition
ISBN: 9780393690675
Author: Laura Kay, Stacy Palen, George Blumenthal
Publisher: W. W. Norton
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Chapter 7, Problem 8QP
To determine
Select the correct option for clumps grow into planetesimals.
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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.
19 A planet is detected via the Doppler technique. The velocity change of the star is a measure of
A The planet's size and density.
B
C
D
E
The planet's mass and orbital distance.
The planet's orbital period and eccentricity.
The planet's mass and composition.
The planet's size and orbital distance.
13. Answer the following question.
A) Give three reasons why our planet does not fly off into space or spiral into the sun.
Chapter 7 Solutions
21st Century Astronomy 6E
Ch. 7.1 - Prob. 7.1CYUCh. 7.2 - Prob. 7.2CYUCh. 7.3 - Prob. 7.3CYUCh. 7.4 - Prob. 7.4CYUCh. 7.5 - Prob. 7.5CYUCh. 7 - Prob. 1QPCh. 7 - Prob. 2QPCh. 7 - Prob. 3QPCh. 7 - Prob. 4QPCh. 7 - Prob. 5QP
Ch. 7 - Prob. 6QPCh. 7 - Prob. 7QPCh. 7 - Prob. 8QPCh. 7 - Prob. 9QPCh. 7 - Prob. 10QPCh. 7 - Prob. 11QPCh. 7 - Prob. 12QPCh. 7 - Prob. 13QPCh. 7 - Prob. 14QPCh. 7 - Prob. 15QPCh. 7 - Prob. 16QPCh. 7 - Prob. 17QPCh. 7 - Prob. 18QPCh. 7 - Prob. 19QPCh. 7 - Prob. 20QPCh. 7 - Prob. 21QPCh. 7 - Prob. 22QPCh. 7 - Prob. 23QPCh. 7 - Prob. 24QPCh. 7 - Prob. 25QPCh. 7 - Prob. 26QPCh. 7 - Prob. 27QPCh. 7 - Prob. 28QPCh. 7 - Prob. 29QPCh. 7 - Prob. 30QPCh. 7 - Prob. 31QPCh. 7 - Prob. 32QPCh. 7 - Prob. 33QPCh. 7 - Prob. 34QPCh. 7 - Prob. 35QPCh. 7 - Prob. 36QPCh. 7 - Prob. 37QPCh. 7 - Prob. 38QPCh. 7 - Prob. 39QPCh. 7 - Prob. 40QPCh. 7 - Prob. 41QPCh. 7 - Prob. 42QPCh. 7 - Prob. 43QPCh. 7 - Prob. 44QPCh. 7 - Prob. 45QP
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- Since 1995, hundreds of extrasolar planets have been discovered. There is the exciting possibility that there is life on one or more of these planets. To support life similar to that on the Earth, the planet must have liquid water. For an Earth-like planet orbiting a star like the Sun, this requirement means that the planet must be within a habitable zone of 0.9 AU to 1.4 AU from the star. The semimajor axis of an extrasolar planet is inferred from its period. What range in periods corresponds to the habitable zone for an Earth-like Planet orbiting a Sun-like star?arrow_forwardImagine 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.arrow_forwardWhy does the solar nebula theory predict that planetary systems are common?arrow_forward
- Why is Jupiter so much richer in hydrogen and helium than Earth?arrow_forwardWhen tidal bulges are NOT in a direct Earth-moon line but slightly ahead of the moon, a. Earth’s gravity weakens. b. their gravitational field pulls the moon forward in its orbit, causing it to recede from Earth. c. their gravitational field pulls the moon back in its orbit, causing the moon to fall toward Earth. d. Earth’s gravity strengthens, causing the moon to orbit faster. e. the tidal bulges have no effect on the moon.arrow_forward13. The diagrams represent Saturn and one of its moons, Titan. Which diagram shows the distance between the two points that should be used to calculate the gravitational attraction between Saturn and Titan?arrow_forward
- 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.arrow_forwardName Date Use the table to answer questions 13 through 15. NAME DISTANCE FROM AVERAGE ΤΥΡΕ ORBIT DIAMETER SUN (Million Miles) (Earth Days) (Miles) 3,032 TEMPERATURE ('C) Mercury 35 5,800 Terrestrial 88 Venus 67 260 Terrestrial 224 7,521 Earth 93 365 7,926 15 Terrestrial Mars 142 260 Terrestrial 687 4,222 Jupiter 484 2150 Gas 4332 88,846 74,898 31,763 Saturn 887 2170 Gas 10755 Uranus 1,784 2200 Gas 30687 Neptune 2,795 2220 Gas 60190 30,778arrow_forward4. Calculate the escape velocity of the Jupiter.arrow_forward
- 217% ab (See #4 for Earth mass and radus 5. A satellite has an orbital radius 100 km above the Earth's surface. a. What is the speed of the satellite? b. How many minutes does it take the sātellite to complete one orbit?arrow_forward19. A laser beam takes 0.024s to jravel from a rocket to the reflective surface of a planet and back to the rocket. How far is the rocket from this planet's surface? a) 2400 km b) 1200 km c) 1800 km d) 3600 km e) 4800 km Class commarrow_forwardSurprisingly, the New Horizons probe took pictures of Pluto and found a. ongoing volcanic eruptions b. mountain ranges c. lakes of methane d. a lot of impact craters Pluto and other "dwarf planets" are not considered proper planets because a. they don't have any moons b. they are members of belts like the asteroid and Kuiper belts c. they don't have atmospheres d. their orbital inclinations are too high e. their orbits are too eccentric Which of these planets has never had an artificial satellite? a. Neptune b. Saturn c. Mars d. Jupiter e. Venusarrow_forward
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