Astr 101 - Study guides, Class notes & Summaries

Center of the Solar System Correct Answer-Sun Planets Orbit Correct Answer-Counter Clockwise T/F: Venus's day is longer than a year Correct Answer-True T/F: All planets take a year to go around the sun Correct Answer-False About how many times has Neptune orbited then sun since 1864 Correct Answer-1 0.4 AU goes with what planet? Correct Answer-Mercury The planets are in range of this many miles away. Correct Answer-tens of millions T/F: A light year is critical for measurin...

SETI Correct Answer-Search for Extraterrestrial Intelligence What does ETI need? Correct Answer-1. A platform 2. Stability 3. Emergence, persistence and gradual evolution 4. Be communicative Water's special properties Correct Answer-Contracts at lower temperatures, high heat capacity, important for chemical reactions How many stars in the Milky Way could be suitable for ETI? Correct Answer-At least a few billion Habitable zone Correct Answer-area around a star that life can exist...

ASTR 101 -Astronomy test#1 questions with complete solutions

ASTR 101 Midterm #1 Questions with Complete Solutions

kirkwood gaps Correct Answer-Jupiter's strong gravity makes asteroid orbits within Jupiter's orbit unstable kirkwood gaps Correct Answer-reason why the asteroids didn't form a separate planet asteroids Correct Answer-small, airless, rocky worlds revolving around the sun that are too small to be called planets. most have an irregular shape and elliptical orbits jovian planets Correct Answer-the internal structures contain rock, metal, and hydrogen compounds jupiter and saturn Corre...

ASTR 101 Final Exam With Actual Questions And Verified Detailed Answers...

Q01.01) The brightest stars in a constellation - ️️May actually be quite far away from each other (Q02.01) When does a vertical flagpole in San Luis Obispo NOT cast a shadow? - ️️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 on the winter solstice (NONE OF THE ABOVE) (Q02.02) If you are located in the continental U.S. on the first day of October, how will the position of the Sun at noon b...

Light from the sun takes about 8 minutes to reach Earth. Saturn is about 10 astronomical units from the Sun how long does it take sunlight to reach Saturn? Correct Answer-Just a bit more than the length of astronomy class Approximately when does the full moon rise Correct Answer-Sunset The speed of light is 3x10 ^8 m/s. How far can light travel in a week (which is about 6x10^5 seconds)? Correct Answer-1.8x10^14 meters Approximately how long does it take the moon to orbit the Earth? Corr...

dark energy + evidence correct answers a mysterious repulsive force that appears to be causing the expansion of the universe to accelerate Type Ia supernovae as standard candles; Hbl law says they should be moving faster there; inverse square law for light dictates that dimmer = farther; calculated dstncs to things are even farther than their redshift predicts; they are being pushed away dark matter + evidence correct answers matter (gravity, attractive force) that does not give off electr...

Ecliptic Correct Answer-apparent path of the Sun across Celestial Sphere over the course of a year 88 Correct Answer-number of official constellations constellation Correct Answer-A configuration of stars in the same region of the sky; useful for mapping the sky Northern Constellations Correct Answer-Constellations with latinized greek-mythology names (Orion, Cygnus, Leo, Ursa Major) Southern Constellations Correct Answer-constellations with latin names (Telescopium, Sextans, etc.) ...