21ST CENT.AST.W/WKBK+SMARTWORK >BI<
6th Edition
ISBN: 9780393415216
Author: Kay
Publisher: NORTON
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Chapter 8, Problem 14QP
To determine
The reason for the inner core of the Earth is liquid today.
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If we pushed the Earth closer to the Sun, it would develop a thick, CO2-rich atmosphere like Venus. All of that CO2 would come from the Earth's
a.
sea floor after the oceans evaporate
b.
mantle after the crust melts
c.
volcanic eruptions which would become more frequent
d.
polar regions after the ice caps melt
The condensation hypothesis for the formation of the moon suggests that the moon and Earth formed as a double planet from the same cloud within the solar nebula. It predicts
a.
that the moon and Earth should have nearly the same mass and radius.
b.
that the surfaces of the moon and Earth should be very similar and show evidence of plate tectonics.
c.
that the moon and Earth should have identical compositions and densities.
d.
all of the above.
e.
a and c.
That the moon has no magnetic field implies that
a.
the moon is spinning too slowly to produce a magnetic field.
b.
the interior of the moon is too hot to produce a magnetic field.
c.
the crust of the moon is so thick that the magnetic field can not get out of the interior.
d.
the moon’s core contains little if any molten iron.
e.
the moon is moving further from Earth.
Chapter 8 Solutions
21ST CENT.AST.W/WKBK+SMARTWORK >BI<
Ch. 8.1 - Prob. 8.1CYUCh. 8.2 - Prob. 8.2CYUCh. 8.3 - Prob. 8.3ACYUCh. 8.3 - Prob. 8.3BCYUCh. 8.4 - Prob. 8.4CYUCh. 8.5 - Prob. 8.5CYUCh. 8.6 - Prob. 8.6CYUCh. 8 - Prob. 1QPCh. 8 - Prob. 2QPCh. 8 - Prob. 3QP
Ch. 8 - Prob. 4QPCh. 8 - Prob. 5QPCh. 8 - Prob. 6QPCh. 8 - Prob. 7QPCh. 8 - Prob. 8QPCh. 8 - Prob. 9QPCh. 8 - Prob. 10QPCh. 8 - Prob. 11QPCh. 8 - Prob. 12QPCh. 8 - Prob. 13QPCh. 8 - Prob. 14QPCh. 8 - Prob. 15QPCh. 8 - Prob. 16QPCh. 8 - Prob. 17QPCh. 8 - Prob. 18QPCh. 8 - Prob. 19QPCh. 8 - Prob. 20QPCh. 8 - Prob. 21QPCh. 8 - Prob. 22QPCh. 8 - Prob. 23QPCh. 8 - Prob. 24QPCh. 8 - Prob. 25QPCh. 8 - Prob. 26QPCh. 8 - Prob. 27QPCh. 8 - Prob. 28QPCh. 8 - Prob. 29QPCh. 8 - Prob. 30QPCh. 8 - Prob. 31QPCh. 8 - Prob. 32QPCh. 8 - Prob. 33QPCh. 8 - Prob. 34QPCh. 8 - Prob. 35QPCh. 8 - Prob. 36QPCh. 8 - Prob. 37QPCh. 8 - Prob. 38QPCh. 8 - Prob. 39QPCh. 8 - Prob. 40QPCh. 8 - Prob. 41QPCh. 8 - Prob. 42QPCh. 8 - Prob. 43QPCh. 8 - Prob. 44QPCh. 8 - Prob. 45QP
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- #23arrow_forwardQUESTION 3 The surface of Venus receives a. a lot more sunlight than the surface of the Earth b. much less sunlight than the surface of the Earth c. about as much sunlight as the surface of the Earth QUESTION 4 Venus has very low surface wind speed because a. the greenhouse effect makes the surface temperature nearly uniform b. it has a very thin atmosphere c. the thick clouds don't allow for much convection in the atmosphere d. it doesn't have a large moonarrow_forwardDue to tidal forces, a moon orbiting a planet will eventually a always keep the same side toward the planet b collide with the planet c break up into a number of fragments d develop a warmer climate as time goes on Jupiter's moon Io is very volcanically active, which means it has plate tectonics. a. true b. falsearrow_forward
- Which of the following is most responsible for the formation of new crust ar the edge of a tectonic plate? A. mountain building at a continent-continent convergent boundary B. magma rising up from the mantle at a divergent boundary С. two tectonic plates sliding past one another at a transform boundary D. subduction of one oceanic plate under another at a convergent boundaryarrow_forward1. A giant ice sheet expands quickly over the surface of North America. For how long must the ice sheet remain in place in order to cool the crust to a depth of 2000 m? The thermal diffusivity of crustal rocks is ~ 10-6 m²/s. Give your answer in years.arrow_forward11. Which part of the Earth is a hot, elastic semi-liquid layer that extends around the entire Earth?A. crust B. core C. mantle D. asthenospherearrow_forward
- 5. The "iceberg analogy" for the isostatic equilibrium of the continental crust turns out to be quite the relative density of icebergs versus seawater is close to the relative density of continental crust versus mantle. Glacial ice is about 15% less dense than seawater; likewise continental crust is about 15% less dense than the mantle. This leads to a simple rule that we can call the 1-to-8 rule: for every 1 unit of extra elevation for an iceberg or a mountain belt, there need to be 8 units of total thickness. These iceberg examples illustrate the idea: an iceberg 3 meters above sea level is 24 meters thick an iceberg 1 meter above sea level is 8 meters thick an iceberg 2 meters above sea level is 16 meters thick 3m 2m water level 1m >7m 14m 21m For the following questions, apply the 1-to-8 rule, assuming continental crust in isostatic equilibrium. a. Continental crust at sea level averages about 35 kilometers thick. (1 km = 0.6 miles.) Therefore, in general, how thick must the crust…arrow_forward13. How deep in the crust is 10 kbar? Lithostatic pressure within the crusts results from the weight of the rocks above. Assume an average density of 2750 kg/m3. Use the equation P=p*g*h or P/(p *g)=h 23kPa/m P=pressure (e.g. kbar), p=density, g-gravity 9.8 m/s2, h= depth (m), 1 kbar=1,000 bars, 1 bar=100,000 Pa, 1 Pa=kg/(m*s2), 1 kbar =100,000,000 Pa, 1 km =1000 m. Give your answer in kilometers.arrow_forward12. Which part of the earth makes up about one-third of earth’s total mass and is mostly iron witha solid part and a part that acts like a liquid?A. mantle B. core C. crust D. asthenospherearrow_forward
- Some planets have very strong magnetic fields. What features must a planet have to cause this? a.both rapid rotation and a conducting liquid core b.only a rapid rotation c.only a liquid conducting core d.both a rapid rotation and a solid metallic core e.only a metallic corearrow_forward1) Distinguish between the mantle and the inner core. 2) Explain in your own words how the Earth's layers were formed. 3) Explain what cause the mantle to "flow"? 4) What are the two main metals that make up the outer and inner core?arrow_forwardThe condensation sequence predicts that asteroids consisting of carbonaceous material would form a. in the inner solar system where it is warmer. b. at random locations then migrating to the outer asteroid belt due to the gravitational influence of Jupiter and Saturn. c. in the outer solar system where it is very cold. d. between the orbits of Jupiter and Saturn. e. in the outer asteroid belt where it is cooler.arrow_forward
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