Test Answers on Astrophysics Flashcards

ASTR 102 – TEST – MC01 & SA&TF

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 D) the sum total of […]

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ASTR 101 chp 2 concept quiz

The \”celestial sphere\” is another name for our universe. Which of the following statements about the celestial sphere is NOT true? We could not see it at all. The Andromeda Galaxy is faintly visible to the naked eye in the constellation Andromeda. Suppose instead it were located in the same direction in space as the […]

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ASTR 101 chp 3 reading quiz

It helped them keep track of time and seasons, and it was used by some cultures for navigation. What practical value did astronomy offer to ancient civilizations? based on everyday ideas of observation and trial-and-error experiments Scientific thinking is _________. the seven naked-eye objects that appear to move among the constellations The names of the […]

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La Hija del Sastre Info

capítulo 1 Emilia (the main character) wakes up because she thinks she hears soldiers outside. Her father is Lorenzo Matamoros, a former captain of the republicans, and the current leader Franco was trying to capture those of the old regime. She was afraid and wanted to go to her parents’ room even though she is […]

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ASTR 1210 Homework 9

Interaction with light? Visible light meets clear glass Cell phone signals pass through walls Transmission Interaction with light? Visible light does not pass through a black wall Blue light hits a red sweatshirt Absorption Interaction with light? Red light hits a red sweatshirt White light hits a white piece of paper Reflection or Scattering Interaction […]

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Physics Option D, Astrophysics

question Critical Density answer Density for which the curvature of the universe is zero/at which it will expand forever but will reach zero/at which the universe will begin to contract after an infinite amount of time. question Stellar cluster answer Stars that are gravitationally bound forming an arrangement in space. question Constellation answer A collection […]

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Astrophysics PART 4

question Newton’s Model of the Universe answer The universe is infinite in both space and time. It is uniform and static. Meaning there are an infinite number of stars heading out in all directions to infinity (otherwise the universe would collapse under its own gravitational force) question Obler’s Paradox Question answer Why is the night […]

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Physics – Topic D: Astrophysics – D.1 Stellar Quantities

question Comets answer Comets are irregular objects a few kilometres across comprising of frozen gases, rock and dust. question Stars (Single & Binary) answer All stars initially form when gravity causes gas in a nebula to condense. As the atoms move towards one another, they lose gravitational potential energy that is converted into kinetic energy. […]

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Astrophysics Study Guide Answers

question Binary Star answer Two stars orbiting a common centre question Black Dwarf answer The remnant of a white dwarf after it has cooled down. It has very low luminosity. question Black Hole answer A singularity in space-time; the end result in the evolution of a very massive star. question Brown Dwarf answer Gas and […]

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Physics – Option E – Astrophysics

question Absolute magnitude answer The apparent magnitude a star would have if observed from a distance of 10 pc. question Apparent brightness answer The received energy per second per unit area of detector. It equals b = L/4(pi)d^2. Its units are Wm^-2. question Apparent magnitude answer A measure of brightness of a star as seen […]

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IB Physics Topic Option E Astrophysics

question Define a planet. answer •Celestial body that orbits around the sun •has sufficient mass for its self gravity •has cleared the neighborhood around its orbit question Define astroids. answer Between orbits of Mars and Jupiter, smaller orbiting bodies question Define comets. answer •small orbiting body •loose particles of ice and rock that are blown […]

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AST 101 Exam 2 Laws of Astrophysics

question Keplers 1st Law (Orbital Motion) answer Planets travel in elliptical orbits with the sun as a focus question Keplers 2nd Law (Orbital Motion) answer The line going from the Sun to the planet sweeps out equal areas in equal times *Explains relationship between planets around the sun question Keplers 3rd Law (Orbital Motion) answer […]

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Glossary (Nuclear, Thermal and Astrophysics) AQA Physics A Unit 5A

question Absolute magnitude (M) answer The apparent magnitude a star would have if it were placed at a standard distance of 10 pc from Earth. m – M = 5 log(d/10) where d is the distance in parsecs. question Activity (A) answer The number of emissions per second, measured in Becquerels. question Airy disc answer […]

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Astrophysics Questions And Answers

question Outline the likely evolution of the star Khad after it leaves the main sequence answer Since it has a mass greater than 1.3 Ms, it will go through a super red giant, onto a supernova to a neutron star or black hole. question Red supergiant star: answer • Large luminosity • Red color • […]

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Astrophysics Definitions

question What is the universe? answer a large collection of billions of galaxies question What is a galaxy? answer A large cluster of stars question What is a solar system? answer a star with orbiting planets question What is a planet? answer A large sphere of matter that orbits the sun question What is an […]

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Astrophysics IB PHYSICS HL

question Solar system answer Mercury, venus, earth, mars, jupiter, saturn, uranus and neptune. question Stellar clusters answer Groupings of a large number of stars bound by gravity. 1. Globular clusters: large number of mainly old stars. 2. Open clusters: small number of young stars that are farther apart. question Galaxy answer A huge assembly of […]

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Astrophysics for People in a Hurry

question Einstein’s General Theory of Relativity answer The presence of matter and energy curves the fabric of space and time around it. question Molecules answer A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction. question Atoms answer A unit of matter; […]

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Astrophysics Test

question Sun answer 99% of the mass of the solar system made mostly of H/He gas (plasma) converts 4 million tons question Mercury answer Made out of metal and rock, large iron core cratered, desolate, long, tall, steep cliffs question Venus answer Earth’s twin because size surface hidden by clouds 1 day Venus 243 days […]

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Astrophysics Questions

question When did Pluto become a dwarf planet? answer August 2006 question How many planets are in our solar system? answer 8 planets question What is our solar system called answer The Milky Way question How long does it take to get to the sun answer 19 years question Who was the first person to […]

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Astrophysics Study Guide Flashcard

question chapter 12 answer … question what dust is emitted into to create galaxies answer interstellar medium question giant molecular clouds which are cool and dense collapse into answer cluster of stars question if temp reaches 10,000,000K what happens answer nuclear fusion into a protostar question high mass stars have higher luminosity than low mass […]

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Astrophysics concepts study guide

question Outline general structure of solar system answer Order of planets: (including order in mass and radius; smallest to largest.) Mercury; 1, 1 Venus; 3, 3 Earth;4, 4 Mars; 2, 2 Jupiter; 8,8 Saturn; 7,7 Uranus; 5, 6 Neptune; 6, question Distinguish between stellar cluster and a constellation answer CONSTELLATIONS: Stars that look like they […]

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