Which of the following real things in our solar system would look most like such science fiction dangers? This report specifically reviews the evidence on the potential mechanisms by which smoking causes diseases and considers whether a mechanism is likely to be operative in the production of human disease by tobacco smoke. Pluto meets requirement parts 1 and 2 but not part 3, so it was defined as merely a dwarf planet, and according to the IAU a dwarf planet is not a subcategory of planet but is a separate category. All the following statements are true. Evidence for these ice deposits comes from high-resolution spectra obtained using the Gemini Observatory’s Adaptive Optics system, ALTAIR coupled with the near-infrared instrument NIRI. Suppose Earth were to cool down a little. In fact, what it does "explain" is far outweighed by what it does not explain. What can you conclude about the orbiting planet? use computer models to predict interior conditions. Continental crust is made as the lowest-density seafloor crust melts and erupts to the surface near subduction zones. 0000003340 00000 n The Hit Series Returns Sunday, January 2 at 8 PM ET/PT on Discovery (LOS ANGELES) – It’s a dirty job, but somebody has to do it. What do we mean by a primitive meteorite? See our A computer accessory salesman attempts to convince you to purchase a "solar neutrino" shield for your new computer. Which of the following is not an expected consequence of global warming? - Pluto's orbit never comes anywhere close to Neptune's orbit. You observe a star very similar to our own Sun in size and mass. Here are nine reasons why Pluto is a planet. 1. Pluto is not that small When people explain why they think Pluto is not a planet, they say it’s just too small. Neil deGrasse Tyson asks, if Neptune were the size of a Chevy Impala, then what size car would Pluto be? His answer: it would be a matchbox car. countless icy particles, ranging in size from dust grains to large boulders. They are higher in average density than are the terrestrial planets. 0000002375 00000 n The nitrogen and oxygen in Earth's atmosphere keep the surface pleasantly warm. What do we mean by ACCRETION in the context of planet formation? On average, how fast do the plates move on the Earth? The results of these skilfully conducted observations were published in a memoir on The Uranian and Neptunian Systems. Vision can blind leaders in a number of ways… The high-powered, charismatic principal who “radically transforms the school” in four or five years can… be blinding and misleading as a role model… my hypothesis would be that most such schools decline after the leader leaves… The choices below describe four hypothetical planets. Designed throughout to help students master physical concepts, improve their problem-solving skills, and enrich their understanding of the world around them, the text's logical presentation of concepts, a consistent strategy for solving ... Big Bang The rapid expansion of dense matter that, according to current theory, marked the origin of the universe. Why are neutrinos so difficult to detect? Astronomers have detected small lakes of liquid water on Europa's surface. Which of the following would most likely be true? The planet must have many small moons that orbit relatively close to the planet in its equatorial plane. Editor’s note: The findings described in this press release were updated with additional research published on Nov. 20, 2017, and described in ”Recurring Martian Streaks: Sand, not Water?" The developed Hypersphere World-Universe Model (WUM) is consistent with all Concepts of the World [1]. Neither the asteroid belt nor Oort cloud would exist. a region of space around a planet in which the planet's magnetic field can trap charged particles. (It's even "on sale" !) a greenhouse effect that keeps getting stronger until all of a planet's greenhouse gases are in its atmosphere. According to current evidence, Pluto is best explained as _____. ALERT: Before you purchase, check with your instructor or review your course syllabus to ensure that you select the correct ISBN. Found inside – Page 178Further evidence for a massive primordial Kuiper belt was uncovered by Stern ( 1995 ) , who found that the objects ... all models naturally produce a few objects on the order of the size of Pluto and approximately the right number of ... How is the sunspot cycle directly relevant to us here on Earth? Pluto, for instance, has an underground ocean, a multilayer atmosphere, organic compounds, evidence of ancient lakes and multiple moons, he says. According to current evidence, Pluto is best explained as _____. Your email address is only used to allow you to reset your password. What do we mean when we say that the Sun is in gravitational equilibrium? A place where a seafloor plate is sliding under a continental plate. Otherwise, click the red Don't know box. They actually contain relatively little material in a gaseous state. Which statement about asteroids is not true? Jupiter and the other jovian planets are sometimes called "gas giants." Satellites in low-Earth orbits are more likely to crash to Earth when the sunspot cycle is near solar maximum because _________. If the hypothesis tracing the extinction of the dinosaurs to an impact is correct, the dinosaurs died off largely because ______. The rings must look much the same today as they did shortly after Saturn formed. x�b```b``���������ˀ �,`ȱ�����k��10� �a���J,]a�&�,� ��((�� (U�Ġ������nN�h�(ˤ���X�x��\�y+. For instance, Pluto is much closer in size to other dwarf planets like Makemake and Eris. LEFT ARROW - move card to the Don't know pile. (also available in hardcover) A comet’s plasma tail always points directly away from the Sun because __________. Triton orbits Neptune in a direction opposite that of Neptune's rotation. Most of the Moon's surface is densely covered with craters, but we find relatively few craters within the lunar maria. 0000001257 00000 n How does the Sun's mass compare with that of the planets. 1. Among discovered meteorites, we have found some with all the following origins except _________. Astrology has been dated to at least the 2nd millennium BCE, and has its roots in calendrical systems used to predict seasonal shifts and to interpret celestial cycles as signs of divine communications. Which of the following objects are probably not located in the same general region of the solar system in which they originally formed? These two features are clues to how the solar system formed. Suppose there were no solar wind. Introduction: The Question and the Strategy 1.1 The Nature of the Question. Every second, the Sun converts about 600 million tons of hydrogen into 596 million tons of helium. It is a thousand times more massive than all the planets combined. FILE - Sen. Kyrsten Sinema, D-Ariz., speaks during a Senate Finance Committee hearing on Oct. 19, … Expatica is the international community’s online home away from home. Did a large terrestrial planet ever form in the region of the asteroid belt? What two physical processes balance each other to create the condition known as gravitational equilibrium in stars? Then click the card to flip it. A. a very small jovian planet B. a terrestrial planet that is surprisingly far from the Sun C. an escaped moon of Jupiter or Saturn D. a large member of the Kuiper belt When we say that jovian planets contain significant amounts of hydrogen compounds, we mean all the following chemicals EXCEPT _________. So, too, the halves of our moon. In When the Earth Had Two Moons, esteemed planetary geologist Erik Asphaug takes us on an exhilarating tour through the farthest reaches of time and our galaxy to find out why. How do scientists determine the age of the solar system? Jupiter's colors come in part from its three layers of clouds. Get the latest science news and technology news, read tech reviews and more at ABC News. In my opinion this was a mistake. Pluto’s large moon Charon displays impressive tectonics and evidence for a heterogeneous crustal composition, but no evidence for an atmosphere; its … There were very few planetary leftovers in this region, because most of the solid material was accreted by the terrestrial planets as the planets formed. was not surprising, because other Kuiper belt objects approaching the size of Pluto had already been discovered. Which of the following best describes the geological histories of the Moon and Mercury? The core would heat up, fusion rates would increase, the core would re-expand. Found inside – Page 154In order to understand the bulk density of Pluto, first we must have a good knowledge of Pluto's mass, size and shape. ... The mean radius is 1188.3 Æ 1.6 (2-s) km with no evidence of oblateness down to 0.6% (Nimmo et al., 2017). Pluto is 18.5% the size of Earth. Chrystia Freeland, acclaimed business journalist and Global Editor-at-Large of Reuters, has unprecedented access to the richest and most successful people on the planet, from Davos to Dubai, and dissects their lives with intelligence, ... Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page. How is Einstein's famous equation, E=mc^2, important in understanding the Sun? You only have to indicate the short deadline and our support team will help pick the best and most qualified writer in your field. Venus has a much stronger greenhouse effect than Earth. How big an object causes a typical shooting star? Which of the following best explains why many jovian moons have been more geologically active than the Moon or Mercury? If you lived on Pluto, you'd have to live 248 Earth years to celebrate your first birthday in Pluto-years. If you lived on Pluto, you would see Charon from only one side of the planet. At Pluto's current distance from the sun, the temperature on its surface is about 400 degrees below zero Fahrenheit! Astronomy. Recounts the earliest search for Pluto, its discovery in 1930, and what has been learned about it since then through space missions and the Hubble Space Telescope According to ancient reports, Democritus was born about 460 BCE (thus, he was a younger contemporary of Socrates) and was a citizen of Abdera, although some reports mention Miletus. New findings from NASA's Mars Reconnaissance Orbiter (MRO) provide the strongest evidence yet that liquid water flows intermittently on present-day Mars. Eventually, over millions of years, it will drag the whole planet over." Assuming this is true, which of the following could explain why Mars today lacks a global magnetic field like that of Earth? a layer of relatively strong, rigid rock, encompassing the crust and part of the mantle. What is the primary basis upon which we divide the ingredients of the solar nebula into four categories (hydrogen/helium; hydrogen compound; rock; metal)? The reason that small planets tend to lose interior heat faster than larger planets is essentially the same as the reason that _________. Here you'll find the best how-to videos around, from delicious, easy-to-follow recipes to beauty and fashion tips. The astronomer who inadvertently triggered the "demotion" of Pluto in his effort to officially recognize the solar system's tenth planet describes the ensuing debates and public outcry while revealing the behind-the-scenes story of his ... Question 13. Terrestrial planets contain large quantities of ice and jovian planets do not. %PDF-1.4 %���� Which of the following is the most basic definition of a greenhouse gas? a comet: According to current evidence, Pluto is best … xref We could survive on Mars without spacesuits, as long as we brought oxygen in scuba tanks. Mike Rowe, a champion of essential workers, is … Over time, these clumps slowly compact into a giant planet. Which of the following statements about our Sun is not true? Suppose you start with 1 kg of a radioactive substance that has a half-life of 10 years. Pluto is only about half the width of the United States. Fusion in the Sun's core creates neutrinos. Seafloor crust is younger than continental crust, so it has had less time in which to suffer impacts. What can we conclude? a stream of charged particles flowing outward from the surface of the Sun. The cores of the terrestrial worlds are made mostly of metal because ______. Summary About 6.8 million Jewish Israelis and 6.8 million Palestinians live today between the Mediterranean Sea and Jordan River, an area encompassing Israel … According to current evidence, Pluto is best explained as _____. the glow from a pea-size particle and the surrounding air as the particle burns up in our atmosphere. Tweet. A typical meteor is created by a particle about the size of a _________. According to our theory of solar system formation, which law best explains why the solar nebula spun faster as it shrank in size? In essence, the Kepler mission is searching for extrasolar planets by _________. Rep. Matt Gaetz on Tuesday denied that he had a sexual relationship with a 17-year-old after the New York Times reported that, according to its … The objects within it are called Kuiper Belt Objects, the best known being the dwarf planet Pluto. The atmosphere is too cold and thin for liquid water today, yet we see evidence that water flowed on the surface in the past. “It was the best explanation we could come up with,” Dr. Trujillo said. Which of the following best explain what we think happened to outgassed water vapor on Venus? Presbyterian and Anglican Quaker and Lutheran Catholic and Purita. Suppose you find a rock that contains 10 micrograms of radioactive potassium-40, which has a half-life of 1.25 billion years. Which of the following best describes why the Sun emits most of its energy in the form of visible light? Astronomy Ch 4. Ultraviolet light split the water molecules, and the hydrogen then escaped to space. Core of rock, metal, and hydrogen compounds; thick layer of metallic hydrogen; layer of liquid hydrogen; layer of gaseous hydrogen; cloud layer. According to present understanding, which of the following statements about the solar wind is NOT true?

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