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Elementary Astronomy

by: Melyna Mayert

Elementary Astronomy PSC 203

Melyna Mayert
GPA 3.99


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Class Notes
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This 10 page Class Notes was uploaded by Melyna Mayert on Tuesday October 20, 2015. The Class Notes belongs to PSC 203 at South Carolina State University taught by Staff in Fall. Since its upload, it has received 20 views. For similar materials see /class/225408/psc-203-south-carolina-state-university in Physical Science at South Carolina State University.


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Date Created: 10/20/15
Small Bodies in the Solar System PSC 203 Overview In this section What do we know about the formation of the solar system What are the properties of the small bodies in the solar system What happens when small bodies impact the Earth Solar System Review What objects are found in the solar system What objects are classified as small bodies What are the general properties of the terrestrial and jovian planets Formation What is the solar nebula theory Videos Discussion Summary Cloud of gas and dust Small particles stick together Build up into larger bodies Sun blows extra gas out of inner regions Leftover fragments collide with larger bodies Sparse small bodies collect in stable areas Properties of the planets Explanation of planet properties Temperatures Composition Size Moons Spacing Asteroids What type of material is left over in asteroid belt region Properties we see Asteroid Images Asteroid Belt Main Belt between Mars and Jupiter Unknown number probably gt 1 million I 200 gt 100 km Diagrams misleading I Really spread out Other Asteroids Trojan Asteroids Along Jupiter39s orbit Near Earth Asteroids Video CNN interview Kuiper Belt Objects Starts just outside of Neptune s orbit What type of material do we see here Comets What type of material is left over in the outer regions of the solar system Properties we see Comets closer in What happens as a comet approaches the Sun Ice starts to melt Releases trapped dust and gas Sun pushes material out into large tail Comet Diagram I A A39A39A39l39l39 39lllllll Meteroids Generally small to very small Could be primarily rock metal or mix Not easily visible in space Visible when impact earth s atmosphere Vocabulary Meteoroid in space Meteor in atmosphere Meteorite on surface I Meteor shower group of meteors coming from one region of the s when earth passes through old comet tail Impact on Earth Very very small Burn up in atmosphere unnoticed Very small Shooting star in air Doesn t reach surface Small Bright re ball Small meteorite left on ground Impact on Earth Medium Bright re ball shock wave Crater left on surface Larger Massive blast on impact Largest extinction event Impact videos Real Meteor ShoeMaker Levy Understanding Asteroids 02 and 58 Inclass activity Individually write down on the index card one remaining question you have about something in the solar system Overview of the Planets PSC 203 Overview I In this section I How are the planets categorized I What are the general characteristics of the planets Planets Review I General De nition of a planet I List the planets I Order from Sun I Relative Sizes of the planets I Distances between planets MaxquotY may 993 Plum Other properties I What properties could we use to describe and classify the planets I Brainstorming Observations I How do we study the planets I Reflected sunlight gives images I Space probes collect data I Orbital data from moons I Computer models to test ideas Classical Categories I Inner Terrestrial Planets I Earth like planets I Mercury Venus Earth Mars I Outer Jovian Planets I Jupiter like planets I Jupiter Saturn Uranus Neptune Terrestrial Planets I Relatively small size I Rocky composition I Relatively warm I Few if any moons Jovian Planets I Relatively large size I Gaseous composition I Relatively cold I Many moons and rings ironnickel e ironnickel ROCk coreri lron nickel sllicales o u re Rock i silicales M Mercury Earlh Mars l 105011 scale l 39 i ock i slllcules Molecular hydrogen gas changing lo liquid oi base Pluto V Molecular hydrogen 905 i rWuier yr Water 39 Rockand quoton 39Rock and l39mn Why I What causes this pattern of properties between the terrestrial and jovian planets I Your thoughts I Discussion I To be continued Appearance I Each planet has a different appearance I Worldwide telescope tour I Google image search The following images are posted for easier viewing of the notes on the course website Appearance Mercury Venus Copyright 6 Tbs McGraw HIII Companies Inc Permisslon vequlred lor repmduwon or display Saturn Hllcop ls Uranus Neptune Characteristics I Each planet has some characteristics that help it stand out from the others I List some that you know of as we get to each one Mercury I Class provided answers I Looks like the moon I No atmosphere I Lots of craters I Wide temperature variation between light and dark sides Venus I Class provided answers I Very hot can melt lead I Clouds of Sulfuric acid light yellow color I Volcanoes on surface I Carbon dioxide atmosphere Earth I Class provided answers I Home to all known life I Liquid water I Oxygen in atmosphere Mars I Class provided answers I Red appearance I Thin atmosphere I Old mountains I Frozen water ice and dry ice I Indications of warmer past Jupiter I Class provided answers I Largest planet I Multicolored bands of clouds I Great red spot hurricane I Many other swirling storms Saturn I Class provided answers I Bright rings ice crystals I Light yellow color ammonia clouds I Faint bands show storms Uranus I Class provided answers I Pale blue color methane I Rotates on side I Faint bands in atmosphere Neptune I Class provided answers I Dark blue color methane I Noticeable storms and cloud bands I Partial tilt Inclass activity I In groups of 23 For each planet List one significant feature related to its appearance and List one significant feature related to any characteristic other than appearance


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