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 6.4, Problem 6.4CYU
To determine
The reason why scientist don’t see similar features as moon and mercury on Earth.
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We know that both Venus and Mars lack mountain ranges because they both lack
a.
magnetic fields
b.
volcanoes
c.
plate tectonics
d.
atmospheres
Which of the following properties of Mars would be altered by the process of terraforming?
its size
its atmospheric chemistry
its distance from the Sun
its geological activity
its magnetic field
Even if we were to terraform Mars to give it an Earthlike climate, that climate would not be as stable as Earth's, due to Mars's lack of
a large moon
volcanic activity
an iron core
atmospheric nitrogen
Which planet has impact craters just scattered randomly over its entire surface?
a.
Mercury
b.
Venus
c.
Earth
d.
Mars
2. We hope to find evidence of past life on Venus by discovering fossils there someday.
True
False
Chapter 6 Solutions
Understanding Our Universe
Ch. 6.1 - Prob. 6.1CYUCh. 6.2 - Prob. 6.2CYUCh. 6.3 - Prob. 6.3CYUCh. 6.4 - Prob. 6.4CYUCh. 6.5 - Prob. 6.5CYUCh. 6 - Prob. 1QAPCh. 6 - Prob. 2QAPCh. 6 - Prob. 3QAPCh. 6 - Prob. 4QAPCh. 6 - Prob. 5QAP
Ch. 6 - Prob. 6QAPCh. 6 - Prob. 7QAPCh. 6 - Prob. 8QAPCh. 6 - Prob. 9QAPCh. 6 - Prob. 10QAPCh. 6 - Prob. 11QAPCh. 6 - Prob. 12QAPCh. 6 - Prob. 13QAPCh. 6 - Prob. 14QAPCh. 6 - Prob. 15QAPCh. 6 - Prob. 16QAPCh. 6 - Prob. 17QAPCh. 6 - Prob. 18QAPCh. 6 - Prob. 19QAPCh. 6 - Prob. 20QAPCh. 6 - Prob. 21QAPCh. 6 - Prob. 22QAPCh. 6 - Prob. 23QAPCh. 6 - Prob. 24QAPCh. 6 - Prob. 25QAPCh. 6 - Prob. 26QAPCh. 6 - Prob. 27QAPCh. 6 - Prob. 28QAPCh. 6 - Prob. 29QAPCh. 6 - Prob. 30QAPCh. 6 - Prob. 31QAPCh. 6 - Prob. 32QAPCh. 6 - Prob. 33QAPCh. 6 - Prob. 34QAPCh. 6 - Prob. 35QAPCh. 6 - Prob. 36QAPCh. 6 - Prob. 37QAPCh. 6 - Prob. 38QAPCh. 6 - Prob. 39QAPCh. 6 - Prob. 40QAPCh. 6 - Prob. 41QAPCh. 6 - Prob. 42QAPCh. 6 - Prob. 43QAPCh. 6 - Prob. 44QAPCh. 6 - Prob. 45QAP
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- Which of the following is least reasonable regarding impact craters? Group of answer choices The size and shape of the crater and the amount of material excavated depends on factors such as the velocity and mass of the impacting body and the geology of the surface. Craters are most often are circular but more elongate craters can be produced with impactors striking the surface at very low angles. The Moon has more craters than the Earth because of its strong tidal force on the impactors. Objects from space typically hit Earth at about 20 km/s ande produce craters that can be approximately 20 times larger in diameter than the impacting objects. The faster the incoming impactor, the larger the crater.arrow_forwardEarth's atmosphere contains just a small amount of carbon dioxide at the present time, because Earth's volcanoes did not outgas as much carbon dioxide as those on Mars and Venus Chemical reactions with other gases destroyed the carbon dioxide and replaced it with Nitrogen Carbon dioxide dissolves in water, and now most of it is contained in oceans and carbonate rocks Most of the carbon dioxide was lost during the 'heavy bombardment' phasearrow_forwardDescribe the planet Venus. Attributes like atmosphere, rotation, etc. should be included in your description.arrow_forward
- Which of these surface features, discovered by the first spacecraft mission (Mariner 4) to Mars, was NOT expected to be seen on Mars? Answers: A. craters B. giant volcanoes C. expansive canyons D. canals E. running waterarrow_forwardOn the night side of Venus, we find that the brightest wavelength, that is the wavelength this region of the planet is emitting the most energy, is about 3.9 micrometers (3.9x10-6 meters). Approximately how warm is the planet in this region?arrow_forwardOn the night side of Venus, we find that the brightest wavelength, that is the wavelength this region of the planet is emitting the most energy, is about 3.9 micrometres (3.9x10-6 meters). Approximately how warm is the planet in this region?arrow_forward
- Both Venus and Mars have a. volcanic craters only b. impact craters only c. some volcanic and some impact cratersarrow_forwardThe clouds that surround Venus are so thick that the planet actually absorbs less sunlight than the Earth. Nevertheless, Venus has a surface temperature of more than 400 C. Which of these best explains this high surface temperature?arrow_forwardThe Soviet Venera landers found rocks on Venus that were over 4 billion years old. True False 2. Venus is very bright and reflective because of its a. high surface temperatures b. large number of active volcanoes c. thick cover of sulfuric-acid clouds d. planet-wide oceansarrow_forward
- What are the conditions necessary for a terrestrial planet to have a strong magnetic field? A molten metallic core only Fast rotation only A rocky mantel only Both a molten metallic core and fairly fast rotation Both a molten metallic core and a rocky mantlearrow_forwardVenus is very bright and reflective because of its a. high surface temperatures b. large number of active volcanoes c. thick cover of sulfuric-acid clouds d. planet-wide oceans 2. The first six Soviet Venera landers failed to return pictures and data from Venus because they all a. got excessively corroded during their passage through Venus's sulfuric-acid clouds b. fell too slowly through Venus's thick atmosphere and got fried before landing c. missed their rendezvous withe Venus because of errors in their orbits d. got cancelled due to technical or budgetary problemsarrow_forwardWhat evidence is there that Venus was volcanically active about 300600 million years ago?arrow_forward
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