Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 8, Problem 13QAP
To determine
The reason how Uranus and Neptune are different from Saturn and Jupiter.
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The narrowness of the rings of Uranus and Neptune is believed to be caused by
a.
gravitational interactions between ring particles.
b.
a spiral density wave which confines them.
c.
the magnetic field which holds them in place.
d.
the smaller mass of Uranus and Neptune as compared to that of Saturn.
e.
small shepherd moons that orbit near the rings.
Uranus and neptune have almost similar masses. Which of them will exert the greater gravity towards the earth? Why? Explain
Calculate the Roche radius (in km) for Uranus. The diameter of Uranus is 5.11 ✕ 104 km.
Chapter 8 Solutions
Understanding Our Universe
Ch. 8.1 - Prob. 8.1CYUCh. 8.2 - Prob. 8.2CYUCh. 8.3 - Prob. 8.3CYUCh. 8.4 - Prob. 8.4CYUCh. 8.5 - Prob. 8.5CYUCh. 8 - Prob. 1QAPCh. 8 - Prob. 2QAPCh. 8 - Prob. 3QAPCh. 8 - Prob. 4QAPCh. 8 - Prob. 5QAP
Ch. 8 - Prob. 6QAPCh. 8 - Prob. 7QAPCh. 8 - Prob. 8QAPCh. 8 - Prob. 9QAPCh. 8 - Prob. 10QAPCh. 8 - Prob. 11QAPCh. 8 - Prob. 12QAPCh. 8 - Prob. 13QAPCh. 8 - Prob. 14QAPCh. 8 - Prob. 15QAPCh. 8 - Prob. 16QAPCh. 8 - Prob. 17QAPCh. 8 - Prob. 18QAPCh. 8 - Prob. 19QAPCh. 8 - Prob. 20QAPCh. 8 - Prob. 21QAPCh. 8 - Prob. 22QAPCh. 8 - Prob. 23QAPCh. 8 - Prob. 24QAPCh. 8 - Prob. 25QAPCh. 8 - Prob. 26QAPCh. 8 - Prob. 27QAPCh. 8 - Prob. 28QAPCh. 8 - Prob. 29QAPCh. 8 - Prob. 30QAPCh. 8 - Prob. 31QAPCh. 8 - Prob. 32QAPCh. 8 - Prob. 33QAPCh. 8 - Prob. 34QAPCh. 8 - Prob. 35QAPCh. 8 - Prob. 36QAPCh. 8 - Prob. 37QAPCh. 8 - Prob. 38QAPCh. 8 - Prob. 39QAPCh. 8 - Prob. 40QAPCh. 8 - Prob. 41QAPCh. 8 - Prob. 42QAPCh. 8 - Prob. 43QAPCh. 8 - Prob. 44QAPCh. 8 - Prob. 45QAP
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- Belt-zone circulation is not easily visible on Uranus because a. no clouds form in the pure hydrogen atmosphere. b. there is no differential rotation. c. clouds form very deep in the atmosphere. d. that atmosphere is stirred by cyclonic circulation. e. there is no liquid metallic core.arrow_forwardJupiter is slightly larger than Saturn but its density is about 2 times the density of Saturn. The reason for this density difference is a. Jupiter's higher mass and gravity compress its interior more b. Jupiter is more compressed by Sun's gravity c. Jupiter has larger volume d. Jupiter has larger proportions of rocks and metalarrow_forwardNASA Scientists want to measure the current distance between two of Jupiter's Moons, Ganymede and Europa. They set up a laser on the surface of Ganymede, shine it at a mirror on the surface of Europa and measure how long it takes for the laser light to return to a detector on the surface of Ganymede. They calculated the current distance between the two moons to be 787 million meters. How long did it take the light to make it to Europa and back? *Give answers to at least three significant figures. DO NOT submit answers in scientific notation. Use symbols for units (i.e. m, s, kg, N)*arrow_forward
- The rings of Uranus were discovered a. during an occultation (an eclipse) of a star. b. during an eclipse of one of the moons by the rings. c. during an eclipse of Uranus by the rings. d. as Uranus and the rings passed behind Jupiter. e. by the Voyager 1 spacecraft.arrow_forwardWhich of these is an example of an energy source that could exist on Europa (or beneath its surface) and help enable life in a Europan ocean? a Volcanoes and/or hydrothermal vents on the seafloor b Solar flares from the Sun that penetrate Europa's ice and send radiation into the liquid-water ocean c Europa's rapid motion as it orbits Jupiter d The combustion of fossils fuels beneath the surface, similar to burning coal in the Earth's crustarrow_forwardGiven the masses and radil of Uranus and Neptune, calculate the gravity at the "surface" of each of the planets.arrow_forward
- Why are Uranus and Neptune respectively green-blue and blue?arrow_forwardThe narrow rings of Neptune are bright in forward-scattered light. This finding indicates that the rings a. contain large amounts of dust. b. are very broad with a lot of material within them. c. contain large, boulder-sized particles. d. are composed of particles that are very bright and probably coated with methane snow. e. are composed of well-organized particles resulting from gravitational resonances.arrow_forwardThe high-speed winds, high-level white clouds of methane ice crystals, and cyclonic circulations on Neptune are produced by the a. large amount of heat from the sun that is received at Neptune’s distance. b. small amount of heat from the sun and the flow of heat from the interior of the planet. c. strong magnetic field of the planet. d. flow of heat from the interior of the planet. e. unusually rapid rotation of the planet.arrow_forward
- Jupiter is denser than water, yet composed for the most part of two light gases, hydrogen and helium. What makes Jupiter as dense as it is?arrow_forwardBoth Uranus and Neptune have a blue-green tint when observed through a telescope. What does this color tell you about their atmospheric composition?arrow_forwardHow many times more pressure exists in the interior of Jupiter compared to that of Earth?arrow_forward
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