21ST CENT.ASTRONOMY(LL)W/CODE WKBK PKG.
6th Edition
ISBN: 9780393874921
Author: PALEN
Publisher: Norton, W. W. & Company, Inc.
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Chapter 8, Problem 7QP
To determine
The reason for the Scientists know the history of Earth’s magnetic field from the given options.
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Students have asked these similar questions
1) Describe the interior of the earth. Label and list all the layers. Explain how the earth’s megnatic field is formed. ( This is question from PH-111)
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 core
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.ASTRONOMY(LL)W/CODE WKBK PKG.
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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- QUESTION 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_forwardThe 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.arrow_forward
- 7. For a reflection seismic survey, where the subsurface has an average P-wave velocity of 1000m/s and we use a 10ms seismic wavelet, the best resolution we could obtain is? а. 1 m b. 2.5 m с. 5m d. 10 m 8. Seismic migration can be best described as a. Converting the seismic section from time to depth b. Adjusting the reflection time based on the hyperbolic travel time c. Stacking the traces d. Putting seismic reflectors in their correct location 9. In a seismic survey, an air wave can be best described as a. A wave that travels through the air b. A compression wave that travels through the air in the pore spaces in the rock. c. A direct, compression wave that travels from the source to the geophones through the air. d. All of the above 10. A seismic survey is conducted in a region with two layers. The top layer is shale, with density 2500 kg/m3, and seismic velocity of 2900m/s, and the bottom layer is sandstone, with a density of 2100 kg/m3, and a seismic velocity of 3000m/s. The…arrow_forwardScientists 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 timearrow_forward#23arrow_forward
- Describe the Law of magnetism.arrow_forwardThe origin of Earth's magnetism is due to moving charges in Earth's? A. liquid inner core B. liquid outer core C. solid inner core D. solid outer corearrow_forwardThe Hawaiian Islands have formed as the Pacific Plate moves northwestward over a hot spot of Earth’s interior that provides magma to form several volcanos. Explain what could happen if the Pacific Plate continues to move.arrow_forward
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