21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Question
Chapter 8, Problem 2QP
To determine
The reason for the determination of relative age of features on a planet from the given options.
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1. Which of the following STILL significantly heats the Earth's interior?
a.
bombardment
b.
compression
c.
radioactivity
d.
differentiation
2. Both the Moon and Mercury have
a.
volcanic craters only
b.
impact craters only
c.
some volcanic and some impact craters
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.
Scientists find evidence of a large meteor impact on the coast of the YucatánPeninsula in Mexico. What can the scientists most likely expect to find in the layers of rock that are about the same age as the impact?A. evidence of the mass extinction of many speciesB. evidence of a gradual change of one species over timeC. evidence of a rapid change in one speciesD. evidence of the stability of many species over time
Chapter 8 Solutions
21st Century Astronomy
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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- The 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_forwardAn asteroid could produce an iron core and silicate mantle if it a. differentiated. b. outgases. c. condensed. d. accreted. e. sublimed.arrow_forward27) The figure below shows a cross section of a hypothetical planet. An earthquake occurred near the surface and seismometers recorded the arrival of P- and S-waves as shown in the figure. The waves shown are the first arrivals and have NOT been refracted or reflected. What can you conclude about the interior of the planet based on seismographs? A) The boundary between the lithosphere and asthenosphere is close to the surface B) The planet has a large, liquid core C) The planet has a large, solid core D) The planet has a solid inner corearrow_forward
- f. Assuming the Earth as an ideal sphere, determine the percentage volume of the core relative to the total volume of the earth. Note: Radius of the Earth is 6371 km, and radius of the core is 3481km.arrow_forwardQuestion :2 a)Calculate the mean density of the earth and moon assuming a spherical shape and the radii rErde = 6371 km and rMond = 1734 km. b) Determine the density of a fully water- saturated sandstone (d quartz = 2650 kg / m³) with a porosity of 18%. c) How does the density of the sandstone under b) change when it is dry. d) Calculate the porosity of a dry cylindrical limestone sample (length = 4.1 cm, Diameter = 2.0 cm, d Calcite = 2710 kg / m³) with a mass of 34.9 g. %3Darrow_forwardWhat is necessary for a differentiation to occur in a planet? Group of answer choices A. It must have metal and rock in it B. It must be a mix of materials of different density C. There must be significant oil inside to lubricate it. D. B and C onlyarrow_forward
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