GEOL 109 Final Exam Questions Answered Correctly Latest Update

GEOL 109 Final Exam Questions Answered Correctly Latest Update Lesson 1: The Solar System - Answers ... Which is the correct sequence of planets, based on increasing average radius of their orbits? - Answers Closest to Sun Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Farthest from Sun The inner planets - Answers All of these are incorrect. Which statement is true for the outer planets of our solar system? - Answers They are largely made of hydrogen and helium. Water ice is - Answers most abundant on the moons of the outer planets What sets the composition of the moons of the outer planets apart from the inner planets? - Answers The moons of the outer planets generally have lower densities. Which objects have orbits that take them the farthest from the Sun in our solar system? - Answers Comets Which of the following objects is most like Earth in size and composition? - Answers Venus What is a major difference between planets and stars? (Select all that apply.) - Answers - Planets are much smaller in diameter than the stars around which they revolve. - Planets do not generate energy through nuclear fusion. What are the major differences between a moon and a planet? (Select all that apply.) - Answers - Planets revolve around the Sun. - Moons revolve around a Sun-orbiting planet. Which of the following are the characteristics of the asteroid belt? (Select all that apply.) - Answers - The asteroids mark the transition from the rocky terrestrial planets to the outer planets. - Some asteroids appear to be rocky; some seem covered with lava; others seem to be metallic; and yet others may have water ice. - Many meteorites that fall on Earth come from the asteroid belt. Lesson 2: Origin of the Elements - Answers ... According to our best modern day evidence, how long ago was the Big Bang? - Answers About 14 billion years ago. The most basic subatomic particles include which of the following? (Select all that apply.) - Answers - Protons - Neutrons - Electrons How are elements heavier than iron produced? - Answers During a supernova explosion What is the principal method of light element (up to iron, atomic number 26) production? - Answers nuclear fusion The T-Tauri phase of a star's history - Answers is typified by extreme fluctuations in energy and a strong magnetic field Many supernovas are the result of - Answers collapse of a star with multiple burning shells How will the Sun's life probably end? - Answers With the formation of a planetary nebula. Which of the following are correct about red giant stars? (Select all that apply.) - Answers - They form as a star expands and the surface cools. - They evolve from medium-sized stars. Put the following stages in the evolution of a medium-sized star in the correct time order, placing the first stage on the top and the last stage on the bottom. - Answers First Stage Molecular Cloud Protostar Main Sequence Star Red Giant Planetary Nebula Last Stage Which kind of stars have the longest lifetimes (~10 billion years)? - Answers Medium-sized stars like our Sun. Lesson 3: Condensation - Answers ... A giant molecular cloud is best described by which statement? - Answers It is a cool mass of gas and dust that can be light years across. Which of the following is correct about the nebulas we see in the sky today? (Select all that apply.) - Answers - They are concentrations of interstellar gas and dust. - Many are the birth grounds of stars. - Some form when stars explode. A "star" that shines, but not as a result of nuclear reactions, is called a __________. - Answers protostar Condensation in the solar nebula and accretion of planets is thought to have occurred about how many years ago? - Answers 4,500,000,000 y Most of the mass of the solar nebula resided in materials which - Answers did not condense to form solids. What were the most common solids that condensed from the solar nebular gases? - Answers They were water ice. Examples of highly refractory materials are - Answers tungsten (W), osmium (Os), and