Why are the lunar mountains smooth and rounded rather than having sharp, pointed peaks? A. Because a sheet of ice once covered the moon’s surface billions of years ago. B. Because they rose up from beneath the Moon’s surface due to an increase in pressure from its hot core billions of years ago C. Because micro meteorites impacts have caused their gradual erosion D. Because the moon once had sulfuric acid clouds long ago

Why are the lunar mountains smooth and rounded rather than having sharp, pointed peaks? A. Because a sheet of ice once covered the moon’s surface billions of years ago. B. Because they rose up from beneath the Moon’s surface due to an increase in pressure from its hot core billions of years ago C. Because micro meteorites impacts have caused their gradual erosion D. Because the moon once had sulfuric acid clouds long ago

Horizons: Exploring the Universe (MindTap Course List)

14th Edition

ISBN:9781305960961

Author:Michael A. Seeds, Dana Backman

Publisher:Michael A. Seeds, Dana Backman

Chapter17: Mercury, Venus, And Mars

Section: Chapter Questions

Problem 2DQ: Imagine that you visit a planet orbiting another star and discover that it is heavily cratered, but...

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Based on the physical aspects of Catena Mendeleev, what is the most plausible explanation for how crater chains are formed on the Moon? a. these craters chains are formed by a series of impacts from a passing comet or asteroid that just passed to close too the Moon and ended up colliding with the Moon b. they are the result of surface collapse due to the prescence of an underground fault c. they are primarily the result of secondary fragments hitting the lunar surface from an initially from an larger impact fragment that resulted in another larger, distant crater
The surface of medium-sized moons provides us with information about the outer solar system. Which of these properties reveals that the outer regions of the solar system was once a very active location? a. the presence of dust Ob. the odd shape of the moons c. the presence of impact craters d. the presence of large cracks on the surface e. their icy surfaces M
The parallel grooves seen on the surface of Phobos may indicate that a. the moon formed elsewhere in the solar system and was captured by Mars. b. the moon formed simultaneously with Mars. c. Phobos was ejected from the surface of Mars after a massive impact by a large asteroid. d. the impact that caused the large crater on Phobos also produced cracks and fractures in the surface. e. Phobos split in half early in its history with one half hitting Mars soon thereafter.
The odd orbits of Nereid and Triton, which are moons of Neptune, indicate that these a. moons were captured. b. moons formed simultaneously with the planet from the same piece of the solar nebula. c. moons broke off from the rapidly rotating planet. d. moons formed as the result from a giant impact early in the planet’s history. e. orbits were disturbed long ago in an interaction with some other body.
14. Saturn's rings a. were created by its incredibly large gravitational capture of asteroids and comets b. have looked basically the same since they formed along with Saturn c. are continually supplied by impacts into small moons d. were created long ago when tidal forces tore apart a large moon
Question: The current and most scientifically accurate theory for the formation of the Moon is: a.) The large impact theory. b.) The capture theory. c.) The fission theory. d.) The twin formation theory.
When tidal bulges are NOT in a direct Earth-moon line but slightly ahead of the moon, a. Earth’s gravity weakens. b. their gravitational field pulls the moon forward in its orbit, causing it to recede from Earth. c. their gravitational field pulls the moon back in its orbit, causing the moon to fall toward Earth. d. Earth’s gravity strengthens, causing the moon to orbit faster. e. the tidal bulges have no effect on the moon.
By looking at the overall density of our moon, we know that the vast majority of it is made of: a. Cheese b. Ice c. Water d. Iron e. Rock
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.
Because of the lack of a temperature difference between the equator and poles of Jupiter, the a. cyclonic circulations on Earth are duplicated on Jupiter. b. high- and low-pressure regions are drawn into bands by the planet’s rapid rotation. c. belt-zone circulation is only a temporary phenomenon. d. belt-zone circulation is exceptionally stable. e. belt zone circulation is an illusion produced by the interaction of sunlight and chemicals in the Jovian atmosphere.
Why do astronomers conclude that the crust on Mars must be thicker than Eths crust?
Imagine that you visit a planet orbiting another star and discover that it is heavily cratered, but its small moon is nearly crater free. Why would that be a surprise? Speculate about what might have happened to those objects.