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 5, Problem 14QAP
To determine
The region where the habitable zone for the planets exist.
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We think the terrestrial planets formed around solid “seeds” that later grew over time through the accretion of rocks and metals.
a) Suppose the Earth grew to its present size in 1 million years through the accretion of particles averaging 100 grams each. On average, how many particles did the Earth capture per second, given that the mass of the Earth is = 5.972 × 10 ^24 kg ?
b) If you stood on Earth during its formation and watched a region covering 100 m^2, how many impacts would you expect to see in one hour. Use the impact rate you calculated in part a. You’ll need the following as well: the radius of the Earth is = 6.371 × 10 ^6 m and the surface area of the Earth is 4??^2Earth
Chapter 5 Solutions
Understanding Our Universe
Ch. 5.1 - Prob. 5.1CYUCh. 5.2 - Prob. 5.2CYUCh. 5.3 - Prob. 5.3CYUCh. 5.4 - Prob. 5.4CYUCh. 5.5 - Prob. 5.5CYUCh. 5.6 - Prob. 5.6CYUCh. 5 - Prob. 1QAPCh. 5 - Prob. 2QAPCh. 5 - Prob. 3QAPCh. 5 - Prob. 4QAP
Ch. 5 - Prob. 5QAPCh. 5 - Prob. 6QAPCh. 5 - Prob. 7QAPCh. 5 - Prob. 8QAPCh. 5 - Prob. 9QAPCh. 5 - Prob. 10QAPCh. 5 - Prob. 11QAPCh. 5 - Prob. 12QAPCh. 5 - Prob. 13QAPCh. 5 - Prob. 14QAPCh. 5 - Prob. 15QAPCh. 5 - Prob. 16QAPCh. 5 - Prob. 17QAPCh. 5 - Prob. 18QAPCh. 5 - Prob. 19QAPCh. 5 - Prob. 20QAPCh. 5 - Prob. 21QAPCh. 5 - Prob. 22QAPCh. 5 - Prob. 23QAPCh. 5 - Prob. 24QAPCh. 5 - Prob. 25QAPCh. 5 - Prob. 27QAPCh. 5 - Prob. 28QAPCh. 5 - Prob. 29QAPCh. 5 - Prob. 30QAPCh. 5 - Prob. 31QAPCh. 5 - Prob. 32QAPCh. 5 - Prob. 34QAPCh. 5 - Prob. 35QAPCh. 5 - Prob. 36QAPCh. 5 - Prob. 37QAPCh. 5 - Prob. 38QAPCh. 5 - Prob. 39QAPCh. 5 - Prob. 40QAPCh. 5 - Prob. 41QAPCh. 5 - Prob. 42QAPCh. 5 - Prob. 43QAPCh. 5 - Prob. 44QAPCh. 5 - Prob. 45QAP
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- A newly discovered orange dwarf star has a surface temperature of approximately 5185 K. How far would its Goldilocks Zone be from the star if an astrologist wanted to look for potentially habitable planets? And how wide would the zone be?arrow_forwardQuestion #4: According to the nebular theory, which planet is most likely to be gaseous rather than rocky? A. Venus, because it is the warmest planet and so is more likely to be gaseous B. Mercury, because planets closer to the solar nebula are more likely to be made of gas, like the nebula C. Earth, because the atmosphere consists of nitrogen, oxygen, and other gases, so it is a gaseous planet D. Neptune, because as the planets get farther from the solar nebula, their composition is more icy and gaseous e Education TM Inc. RK12arrow_forwardHow can a planet’s atmosphere affect the width of the habitable zone in its planetary system?arrow_forward
- What is a habitable zone?arrow_forward7. Complete the table below for the habitability of several solar system planets. Temperature can be hot, moderate, or cold. Amount of atmosphere can be thin, thick, or moderate. Liquid wa- ter amount can be lots, little, or none. Planet Venus Temperature Liquid Water Atmosphere Earth Marsarrow_forwardWhich planets are found within the sun's habitable zone? a. Earth b. Earth and Venus c. Venus, Earth, and Marsarrow_forward
- How is a habitable zone likely to change over time? a. get narrower b. move further from the star c. they aren't likely to changearrow_forwardHow does the habitable zone differ for a star hotter than the sun?arrow_forwardWhat is an exoplanet? Group of answer choices A planet in our solar system beyond Pluto. Any planet with extra-terrestrial life. A planet in an extra-solar star system outside of our solar system. Objects in the solar system such as Pluto that were once considered planets but no longer are.arrow_forward
- Planetary migration is a new process that has been added to the nebular theory of solar system formation. What type of planet, that does not exist in our solar system, made this change to the theory necessary? super-Earths Jovian planets beyond the "frost line" mini-Neptunes O hot Jupiters terrestrial planets in the habitable zonearrow_forwardWhich of the following observations would support the solar nebula theory over the passing star hypothesis? a. Proving that most of the sun-like stars near the sun also have planets orbiting them. b. Proving that none of the stars near the sun has planets orbiting them. c. Finding a planet located beyond the orbit of Pluto. d. Finding a meteorite whose age proved to be greater than 4.6 billion years. e. Proving that Mercury has the same uncompressed density as Earth.arrow_forwardWhich is these facts is NOT explained by the nebular theory? There are two main types of planets: terrestrial and jovian Existance of comets and asteroids Planets orbit in the same direction and plane Number of planets of each type (4 terrestrial and 4 jovian)arrow_forward
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