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Astronomy ASTR 205 Exam Bundle with Complete Solution 2023

Astronomy ASTR 205 Exam Bundle with Complete Solution 2023

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ASTR 205 Final Exam

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What makes up 99.8% of the solar system's mass? The sun Mercury, Venus, Earth and Mars are called what type of planets? Terrestrial Terrestrial planets are ________ in size and ______ in mass and have a _______ density of 3.9-5.5 g/cm3 Small; Low; High What terrestrial planet is the den...

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ASTR 205 Final Exam

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What makes up 99.8% of the solar system's mass? The sun Mercury, Venus, Earth and Mars are called what type of planets? Terrestrial Terrestrial planets are ________ in size and ______ in mass and have a _______ density of 3.9-5.5 g/cm3 Small; Low; High What terrestrial planet is the densest...

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ASTR 205 Exam Study Guide

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Scientific notation is used in science because - it makes it easy to write big or small numbers. The average distance from Earth to the sun is - 1 AU The sun is - a star 1 AU from Earth. more than 100 times the diameter of Earth. A galaxy contains - gas, dust, and stars, and a lot of dark mat...

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ASTR 205 Chapter 17 with quiz

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The radio lobes that flank some radio galaxies produce mainly - synchrotron radiation. The fact that many radio lobes emit more intensely from the side away from the galaxy suggests that - they are created by jets from the galaxy. The central galaxy in a double-lobed radio source is usually - a ...

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ASTR 205 Astronomy Test Multiple choice-- Ch. 4,5,6

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Newton concluded that some force had to act on the moon because - a force is needed to pull the moon away from straight-line motion. When we say that gravitation is universal we mean that - it is a property of all matter. Which of the following people did not accept a heliocentric model for the ...

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ASTR 205 Astronomy Chapter 7

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Which of the following relationships is the key to nuclear reactions in a star's core remaining under control? a. Luminosity depends on mass. b. Pressure depends on temperature. c. Density depends on mass. d. Weight depends on temperature. - b What is opacity? a. the balance between the pre...

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ASTR 205 Astronomy Chapters 1, 2, and 3

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A solar system contains - the sun and the non luminous objects that orbit it, including the planets, comets, and asteroids field of view - the region you can see in an image planet - non luminous object, larger than a comet or asteroid, that orbits a star star - celestial object composed of gas...

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ASTR 205 Astro Review 3 (and after)

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How do we classify galaxies? - We classify galaxies based on if they are spiral, elipitical or irregular. The size is determined be the halo. What kind of stars do elliptical galaxies contain? - Ellipitcal galaxies have only older stars. There is no gas or dust to create new stars. What kind o...

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ASTR 205 Quiz 2

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The first stars to form in our galaxy - had highly elliptical orbits The most likely theories to explain the spiral structure of spiral galaxies are - selfsustaining star formation and the density wave theory. A Type II Cepheid has been located in a distant globular cluster with a period of 10 ...

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ASTR 205 Chapter 12, 13, 14, 15 Flashcards

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The disk of the galaxy is older than the halo. - F The density wave theory explains spurs and branches along the spiral arms. - F Giant molecular cloud complexes are located in spiral arms. - T Shapley found the distance to the center of the galaxy by studying the distance to open clusters - F ...

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Astronomy ASTR 205 Chapter 17-19 Exam Q & A

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Both Jupiter and Saturn 1. All of these 2. emit more energy than they absorb from the sun. 3. have belt and zone circulation. 4. have rings. 5. have liquid metallic hydrogen in their interiors. - 1. All of these Belt and zone circulation 1. has been observed only on Jupiter. 2. is caused b...

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ASTR 205 Quiz 1

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Synchrotron radiation is produced by - high-velocity electrons moving through a magnetic field A Type la supernova is believed to occur - when a white dwarf exceeds the Chandrasekhar limit The material that accretes onto a neutron star or black hole is expected to emit x-rays because - the m...

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