Astr 101 - Study guides, Class notes & Summaries

UW ASTR 101 Exam 1 [Week 1 - 5] Questions with Correct Answers

Queen's University ASTR 101 Questions with Complete Solutions

ASTR 101 Exam 2 Krisciunas TAMU Questions with complete solutions.

(Q01.01) The brightest stars in a constellation Correct Answer-May actually be quite far away from each other (Q02.02) San Luis Obispo, CA is located at ~35N latitude. What is the altitude of the North Star in SLO? Correct Answer-35 degrees above the horizon (Q02.01) When does a vertical flagpole in San Luis Obispo NOT cast a shadow? Correct Answer-Every day at noon; every day at the time the Sun is highest in the sky; when the Sun is highest on the summer solstice; when the Sun is highest...

Even though it is not realistic, why is the celestial sphere model useful? Correct Answer-Describes the locations of things "on" the sky. Declination is measured from the _________ to the __________ Correct Answer-celestial equator; celestial poles How do you measure right ascension? Correct Answer-Measured from "First point in Aries" around the celestial equator Latitude is to declination as longitude is to __________ Correct Answer-Right Ascension Why are the zodiacal constella...

Disk stars (yellow) population components: Correct Answer-- youngest stars - the Sun - high-mass stars - stars that all orbit in nearly the same plane Halo stars (green) population components: Correct Answer-- oldest stars - globular clusters - stars whose orbits can be inclined at any angle - stars with the smallest abundance of heavy elements In which of the basic regions of the Galaxy is the Sun located? Correct Answer-- galactic disk Which statement best describes the distribu...

astronomy Correct Answer-the oldest natural science how many constellations are there over the celestial sphere? Correct Answer-88 Ecliptic Correct Answer-apparent path of the Sun across the Celestial Sphere. Constellation Correct Answer-a region in the sky useful for mapping the sky. The brightest stars in a constellation Correct Answer-may actually be quite far away from each other zentih Correct Answer-the point directly overhead (altitude= 90) horizon Correct Answer-all poi...

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...

Constellations Correct Answer-Recognizable patterns of stars in the sky (big dipper, orions belt) Makes locating stars easier. The official borders were set in 1928 by the International Astronomical Union (IAU). How many constellations are there? Correct Answer-88 Celestial sphere Correct Answer-our view of the night sky; an artificial sky map created by astronomers that applied a coordinate system to it, analogous to the coordinate system of north-south latitude and east-west longitude ...

What are the three characteristics a planet must have? Correct Answer-1. Orbits the sun 2. has sufficient mass to assume round shape 3. cleared the neighborhood around its orbit What are the three characteristics a star must have? Correct Answer-1. luminous ball of gas 2. mostly hydrogen 3. held by own gravity What is an asterism? Give an example Correct Answer-A pattern or projection *Big dipper What is a constellation? Give an example Correct Answer-Help to locate other objects *Ursa ...