Composition of stars Guides d'étude, Notes de cours & Résumés

What is a light year? - distance that light travels in 1 year What is the closest star to Earth besides the Sun? (4.2 ly away) - proxima centauri What is the age of the universe? - 14 billion years What is our cosmic address? What is the Local Group? - Earth, solar system, milky way galaxy, local group, local supercluster Order of planets in our solar system - Mercury, venus, earth, mars, jupiter, saturn, uranus, neptune What is the fastest speed in the universe? - speed of light Typical ...

MF Practice Test Core Questions with Verified Answers What is ORM? It is a decision making tool used by people at all levels to increase our ability to make informed decisions and minimize ricks to acceptable levels. Are technical bulletins containing information about materials, such as composition, chemical and physical characteristics, health and safety hazard, and precautions for safe handling and use. MSDS The first Marine landing took place during the Revolutionary War. Marines invaded N...

Planetary ___ have common plane and direction, low eccentricity; correct answers orbits ___shows similar order; correct answers Rotation Moons have similar ___. correct answers motions Orbital spacing ___random. correct answers not Terrestrial and Jovian planets show ___ and composition correct answers trends in size The collapse of an interstellar cloud. As the cloud contracts, it rotates faster, and the outer parts flatten into a disk. This can be observed happening elsewhere in...

The Cosmic Perspective, 7th Edition, Testbank | 2022 latest update 1 Copyright © 2014 Pearson Education, Inc. The Cosmic Perspective, 7e (Bennett et al.) Chapter 1 A Modern View of the Universe 1.1 Multiple-Choice Questions 1) What is the meaning of the word cosmos? A) the origin of Earth and life upon it B) the light from a distant astronomical object C) the Milky Way D) the sum total of all matter and energy, that is, everything within and between all galaxies E) the dark sky Ans...

Multiple Subjects Praxis - Science (5005) Form 1 Questions and Answers Already Passed Which of the following represents a biome? A. An extended family of chimpanzees B. A stand of bamboo C. An orchid and the insects that feed on it D. A tropical rain forest Option (D) is correct. A biome is a large geographic area with a climate that supports distinctive plant and animal groups. A tropical rain forest is an example of a biome. Which of the following planets is closest to the Sun? A. Mars ...

ASTRONOMY EXAM FINAL!!!! QUESTIONS AND ANSWERS 100% SOLVED What is the mass that divides low mass stars from high mass stars? (what is the criteria for a low mass star or a high mass star in terms of M) ️️M < 8M = low mass M > 8M = high mass What is the evolutionary endpoint for most low mass stars? ️️White Dwarf What is the evolutionary endpoint for most high mass stars? ️️Neutron Star What is happening in the core of a star while it is on the main sequence? ️️...

ASTRO 7N Exam 2Sun's composition - correct answer Composed mostly of gas - hydrogen (73% by mass) and helium (25% by mass)` Sun's stability - correct answer Stable due to balance of gravity (inward force) and gas pressure in its hot interior (outward force) Sun's gas pressure - correct answer Gas pressure provided by nuclear fusion reactions in the Sun's core, going on at a temperature of 15 million degrees Kelvin Sun's diameter and mass compared to Earth - correct answer Diameter:...

ASTRO 7N Exam 2Sun's composition - correct answer Composed mostly of gas - hydrogen (73% by mass) and helium (25% by mass)` Sun's stability - correct answer Stable due to balance of gravity (inward force) and gas pressure in its hot interior (outward force) Sun's gas pressure - correct answer Gas pressure provided by nuclear fusion reactions in the Sun's core, going on at a temperature of 15 million degrees Kelvin Sun's diameter and mass compared to Earth - correct answer Diameter:...

Science Praxis 5005 Elementary Education 100% Correct Plate tectonics Movement of continents and changes in the Earth's crust caused by internal forces Atmosphere dry gas (nitrogen, oxygen, argon carbon dioxide), water vapor, solid particles Troposphere closest to Earth's surface (weather related activities) Stratosphere Very little water, ozone layer Mesosphere Coldest layer Thermosphere Layer extends upward into space Mountains are caused by... volcanic action or tectonic plate collisi...

WGU C165 Integrated Physical Sciences A mathematical model is used to predict the trajectory of a bullet fired from a gun. Which discipline of physical science is used to develop this model? a) Chemistry b) Earth science c) Physics d) Astronomy - ANSWER c) Physics An environmental scientist monitors pollutants in a lake. Which two disciplines of physical science does this scientist use? (Choose 2 ...