21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 12, Problem 15QP
To determine
The parameter that differentiates a dwarf planet from other planet.
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What is the range of density for the outer planets (in g/cm3)?
1.2 to 5.5
2.2 to 5.5
2.2 to 6.5
3.3 to 7.2
none of these
Imagine that astronomers have just discovered a planet orbiting another star (other than the Sun), and they have reported the mass of the planet as 4.2 Jupiter-masses. Explain in a few words what this means.
Choose the best answer
b. Terrestrial planets are further from the Sun, more dense and have fewer moons
c. Terrestrial planets are closer to the sun, less dense and have fewer moons
d. Terrestrial planets are closer to the Sun, more dense and have fewer moons
e. Jovian planets are closer to the Sun, less dense and have more moons
f. Jovian planets are further from the Sun, more dense and have more moons
Chapter 12 Solutions
21st Century Astronomy
Ch. 12.1 - Prob. 12.1CYUCh. 12.2 - Prob. 12.2CYUCh. 12.3 - Prob. 12.3ACYUCh. 12.3 - Prob. 12.3BCYUCh. 12.4 - Prob. 12.4CYUCh. 12.5 - Prob. 12.5CYUCh. 12 - Prob. 1QPCh. 12 - Prob. 2QPCh. 12 - Prob. 3QPCh. 12 - Prob. 4QP
Ch. 12 - Prob. 5QPCh. 12 - Prob. 6QPCh. 12 - Prob. 7QPCh. 12 - Prob. 8QPCh. 12 - Prob. 9QPCh. 12 - Prob. 10QPCh. 12 - Prob. 11QPCh. 12 - Prob. 12QPCh. 12 - Prob. 13QPCh. 12 - Prob. 14QPCh. 12 - Prob. 15QPCh. 12 - Prob. 16QPCh. 12 - Prob. 17QPCh. 12 - Prob. 18QPCh. 12 - Prob. 19QPCh. 12 - Prob. 20QPCh. 12 - Prob. 22QPCh. 12 - Prob. 23QPCh. 12 - Prob. 24QPCh. 12 - Prob. 25QPCh. 12 - Prob. 26QPCh. 12 - Prob. 27QPCh. 12 - Prob. 28QPCh. 12 - Prob. 29QPCh. 12 - Prob. 30QPCh. 12 - Prob. 31QPCh. 12 - Prob. 32QPCh. 12 - Prob. 33QPCh. 12 - Prob. 34QPCh. 12 - Prob. 35QPCh. 12 - Prob. 36QPCh. 12 - Prob. 37QPCh. 12 - Prob. 38QPCh. 12 - Prob. 39QPCh. 12 - Prob. 40QPCh. 12 - Prob. 41QPCh. 12 - Prob. 42QPCh. 12 - Prob. 43QPCh. 12 - Prob. 44QP
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- Miller’s Planet part I: This planet is described as having 130% Earth gravity What is the acceleration due to gravity on the surface of this planet? 7 m/s2 130 m/s2 13 m/s2 Miller’s Planet part II: What is the source of the waves on this planet? Wind Tidal stress due to proximity of Gargantua Plate tectonic driven Miller-quakes Miller’s Planet Part III: Why would it be unlikely that this planet could sustain an atmosphere let alone liquid water on its surface. Gargantua’s accretion disk likely emits X-rays, UV rays and possibly gamma radiation Miller’s planet’s surface gravity is too small Miller’s planet has no magnetic fieldarrow_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_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_forward
- What are the primary constituents of the Jovian planets? (16.5) (a) hydrogen and helium (b) hydrogen and carbon dioxide (c) methane and oxygen (d) nitrogen and oxygenarrow_forwardWhy is Pluto not considered a major planet, and what other peculiarity distinguishes it from the major planets?arrow_forwardAccording to the chart below, how do the gas giants differ from the terrestrial planets? THE TERRESTRIAL PLANETS THE GAS GIANTS MERCURY MARS JUPITER SATURN URANUS NEPTUNE VENUS EARTH ROCK ROCK ROCK ROCK INNER CORE INNER CORE CORE SIren/ Nickel CORE Iron/ WATER WATER WATER Nickel OUTER CORE OUTER CORE METALLIC U HYDROGEN METALLIC WATER MANTLE Reck HYDROGEN MANTLE Rock MANTLE Reck CORE SIren/ Silicates Silicates Silicates Nickel HYDROGEN GAS HYDROGEN GAS HYDROGEN HYDROGEN GAS GAS SURFACE SURFACE SURFACE SURFACE O The gas giants do not have solid surfaces. O The gas giants have an iron core. O The gas giants lack hydrogen gas. O The gas giants do not contain water.arrow_forward
- Fill out this data table with information you have collected about the solar system planets. Characteristics Unit Mercury Venus Earth 330 10 g 4,870 5,970 Mass 61 928 1,083 Volume 1024 cm 5.4 5.4 50 Density g/cm Distance from Sun 58 10° km 100 100 Radius km Crust Thickness km Atmosphere Height km Axial Tilt degrees Force of Gravity on a1 kg test mass N Length of Day 4223 4,223 88 hours 225 365 Length of Orbit Earth days 88 167 464 15 Mean Temperature ° C ТЕВОС Mars Jupiter Saturn Uranus Neptune 102,000 642 | 1,898,000 568.000 86,800arrow_forwardThe synchrotron radiation (radio waves) that astronomers first observed from Jupiter in the 1950's comes from a. deep within Jupiter, in the metallic hydrogen layers b. high speed electrons spirling around the planet's strong magnetic field c. the upper-atmosphere clouds that more quickly near the equator of the planet d. the Red Spot with its tremendous frictionarrow_forwardThe table to the right gives size and distance data for the planets at a certain point in time. Calculate the scaled size and distance for each planet using a 1 to 10 billion scale model solar system. Planet Diameter Distance from Sun Mercury 4880 km 65.1 million km Venus 12,100 km 108.8 million km Earth 12,760 km 147.5 million km Mars 6790 km 244.6 million km Jupiter 143,000 km 807.2 million km Saturn 120,000 km 1406 million km Uranus 52,000 km 2938 million km Neptune 48,400 km 4508 million kmarrow_forward
- Planet Diameter Mass Escape Velocity 1. Jupiter 1.42 x 10$ km 1.898 x 1027 kgarrow_forwardCalculate the density for the following planets: Planet A) Mass = 8.2 , Radius =2.74 km Planet B) Mass = 6.99 , Radius =1.648 km Planet C) Mass = 446 , Radius =19.46 km Planet D) Mass = 2225 , Radius =11.21 km Mass (Earth=1) Masses are given in terms of Earth mass.arrow_forwardWhich types of planets are most easily detected by Doppler measurements? By transits?arrow_forward
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