21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 7.3, Problem 7.3CYU
To determine
Select the correct reason for the inner planets are rocky in our Solar System.
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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.
18. From where do comets originate?A. Just outside the orbit of JupiterB. A belt between Jupiter and MarsC. between the orbits of Saturn and UranusD. From the surrounding outer regions of the solar system
(1) A spherical planet has a radius of 2,000 km and a mass of 1025 kg. Calculate its density (mass/volume) in kilograms per cubic meter.
(2) How many of the atoms in Question (3) can fit within a spherical planet with a diameter of
2 X 104 km?
(3) An asteroid’s radius is 200 m and its distance from Earth is 107 km. What angle in degrees (θ) will it subtend? Use the equation θ = 57 (diameter) / distance
Chapter 7 Solutions
21st Century Astronomy
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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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
- What can we learn about the formation of our solar system by studying other stars? Explain.arrow_forwardDescribe the solar nebula, and outline the sequence of events within the nebula that gave rise to the planetesimals.arrow_forwardExplain our ideas about why the terrestrial planets are rocky and have less gas than the giant planets.arrow_forward
- Describe two processes that could melt the interior of a forming planet.arrow_forwardWhat produced the helium now present in the Sun’s atmosphere? In Jupiter’s atmosphere? In the Sun’s core?arrow_forwardHow Do We know? How can scientists know anything about how the Solar System formed, given that there was nobody there to witness those events?arrow_forward
- How do terrestrial and giant planets differ? List as many ways as you can think of.arrow_forwardPresent theory suggests that giant planets cannot form without condensation of water ice, which becomes vapor at the high temperatures close to a star. So how can we explain the presence of jovian-sized exoplanets closer to their star than Mercury is to our Sun?arrow_forward15)Based on the information found in modules 2.1 , 2.2 AND 2.3 put the following statements about the formation of the Solar system based on the NEBULAR HYPOTHESIS in the correct order from 1. ‘’OLDEST EVENT’’ (first to form according to the Nebular hypothesis) to 5. ‘’YOUNGEST EVENT’’ (Last to form in the Solar system, based on the sequence of events listed) . • Clusters of molten metals and dust particles stuck together to form rocks • Lighter gases were swept away from center of solar system into outer solar system • One to two proto-planets collide to form our Moon • Mutual gravity caused rocks to come together, eventually to form protoplanets • Heavier rocky material, with metallics with higher melting points are left nearer to sunarrow_forward
- Which of the following is NOT a dwarf planet? a. Pluto b. Eris c. Vesta d. Ceres e. Haumea The Earth's magnetic field keeps our planet's a. temperature from rising too much b. moon in its current orbit c. atmosphere safe from the solar wind d. spin axis from wobbling too mucharrow_forwardTriton is the largest moon of Neptune (it is roughly the same size as the earth's moon). It orbits Neptune once every 5.877 days at a distance of roughly 354 Mm from Neptune's center. What is the mass of Neptune?arrow_forward1. Which of these is not a criteria for the success of a solar system formation theory?arrow_forward
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