Astronomical unit Study guides, Class notes & Summaries
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![Our Ladys School - Gizmo Solar System Explorer SE_Key.](/docpics/62febad81bbc3_1905483.jpg)
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Our Ladys School - Gizmo Solar System Explorer SE_Key.
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Solar System Explorer Answer Key 
Vocabulary: astronomical unit, dwarf planet, eccentricity, ellipse, gas giant, Kepler’s laws, orbit, 
orbital radius, period, planet, solar system, terrestrial planet 
Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 
[Note: The purpose of these questions is to activate prior knowledge and get students thinking. 
Students are not expected to know the answers to the Prior Knowledge Questions.] 
1. List all of the planets you can think of in our sola...
![Gizmos - Orbital Motion – Kepler’s Laws Answer Key 2022](/docpics/627568efe51c4_1717234.jpg)
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Gizmos - Orbital Motion – Kepler’s Laws Answer Key 2022
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Gizmos - Orbital Motion – Kepler’s Laws Answer Key Vocabulary: astronomical unit, eccentricity, ellipse, force, gravity, Kepler’s first law, Kepler’s second law, Kepler’s third law, orbit, o rbital radius, period, vector, velocity
![Gizmo Solar System Explorer 2024 - All Answers are Correct](/docpics/4476669/65c9011cc8f60_4476669_121_171.jpeg)
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Gizmo Solar System Explorer 2024 - All Answers are Correct
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Gizmo Solar System Explorer 2024 - All Answers are Correct 
 
Vocabulary: astronomical unit, dwarf planet, eccentricity, ellipse, gas giant, Kepler’s laws, orbit, orbital radius, period, planet, solar system, terrestrial planet
![ASTR 101 Exam 1 with Homework Questions with complete solutions](/docpics/5344864/6648436d79c7c_5344864_121_171.jpeg)
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ASTR 101 Exam 1 with Homework Questions with complete solutions
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Grass appears green because Correct Answer-it reflects green light and absorbs other colors 
 
Place each statement in the correct bin corresponding to whether it represents 1 astronomical unit (1 AU), 1 light-year, or neither of those Correct Answer-1 (AU): about 150 million kilometers, Earth's average distance from the Sun, Jupiter lies about 5.2 of these from the Sun 
 
1 light-year: the distance light travels in 1 year, about 10 trillion kilometers, the star Sirius lies about 8 of these fro...
![ASTR 181 EXAM 1 2024 WITH 100% CORRECT ANSWERS](/docpics/4844272/660344b79aef8_4844272_121_171.jpeg)
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ASTR 181 EXAM 1 2024 WITH 100% CORRECT ANSWERS
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How many stars are in our galaxy? - correct answer 4 x 10^11 
 
What is our cosmic address? - correct answer Earth 
Solar System 
Interstellar Neighborhood 
Milky Way 
Lanieakea 
Observable Universe 
Infinite Universe 
 
What is an astronomical unit? - correct answer The average distance between the Sun and the Earth 
 
As a blackbody becomes hotter, it also becomes ______ and ______. - correct answer More luminous, bluer. 
 
If an electromagnetic wave's frequency increased, then - correct ...
![PHSC 121 Homeworks (1-4) 1st Exam Questions All Correctly Answered](/docpics/5211400/66393edc9dfc2_5211400_121_171.jpeg)
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PHSC 121 Homeworks (1-4) 1st Exam Questions All Correctly Answered
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PHSC 121 Homeworks (1-4) 1st Exam Questions All Correctly Answered 
 
Astronomy is the study of ___________________. 
 
a. the Solar System 
b. galaxies 
c. the entire universe 
d. the planets of the Solar System - Answer -c. the entire universe 
 
Which of the following is not a step in the scientific method? 
 
a. evaluate science opinion 
b. refine hypothesis, develop theory 
c. evaluate data 
d. draw new conclusions from experimental data and observations - Answer -a. evaluate science opinio...
![ASTRO 7N - Unit 2 questions & answers 2024](/docpics/5118363/662c1ce101628_5118363_121_171.jpeg)
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ASTRO 7N - Unit 2 questions & answers 2024
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ASTRO 7N - Unit 2Copernicus - correct answer proposed the heliocentric (sun-centered) model of the universe, which replaced the geocentric (earth-centered) model 
 
distance between earth and sun - correct answer 1 astronomical unit 
-1 AU 
 
time for earth to orbit sun - correct answer 1 earth year 
-365 days 
 
Kepler's first law - correct answer the planets orbit the sun in elliptical orbits with the sun at one focus 
-these ellipses tend to be nearly circular for the planets in our solar s...
![ASTRO 7N - Unit 2 Question and answers rated A+ 2024](/docpics/5111094/662b37e952f17_5111094_121_171.jpeg)
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ASTRO 7N - Unit 2 Question and answers rated A+ 2024
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ASTRO 7N - Unit 2 Question and answers rated A+ 2024 ASTRO 7N - Unit 2 
 
Copernicus - correct answer proposed the heliocentric (sun-centered) model of the universe, which replaced the geocentric (earth-centered) model 
 
distance between earth and sun - correct answer 1 astronomical unit 
-1 AU 
 
time for earth to orbit sun - correct answer 1 earth year 
-365 days 
 
Kepler's first law - correct answer the planets orbit the sun in elliptical orbits with the sun at one focus 
-these ellipses ...
![Astronomy 101 Questions with Complete Solutions](/docpics/5344754/66483d17c8d5a_5344754_121_171.jpeg)
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Astronomy 101 Questions with Complete Solutions
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AU-astronomical unit Correct Answer-Earth's average distance from the sun. Used to describe distance within the solar system 
 
Light Year- ly Correct Answer-Distance light can travel. which is about 10 trillion km. Used to describe distance of stars and galaxies. measure of distance not time. 
 
Solar system Correct Answer-consists of sun,planets, and their moons; which is held together by a common center. 
 
Local Group Correct Answer-more than 70 galaxies put together 
 
galaxy clusters Corr...
![Gizmo Solar System Explorer 2024 - All Answers are Correct](/docpics/4618993/65decb377433a_4618993_121_171.jpeg)
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Gizmo Solar System Explorer 2024 - All Answers are Correct
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Gizmo Solar System Explorer 2024 - All Answers are Correct 
Student Exploration: Solar System Explorer 
 
Vocabulary: astronomical unit, dwarf planet, eccentricity, ellipse, gas giant, Kepler’s laws, orbit, orbital radius, period, planet, solar system, terrestrial planet
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