Astro 7 - Study guides, Class notes & Summaries

ASTRO 7N Unit 1 and 2 Game 2024 Questions & Answers | 100% Correct | Verified

Astro 7n Exam 1 (Unit 1 & 2) Questions With 100% Correct Answers 2024

ASTRO 7N Exam 2 Question and answers rated A+ 2024 ASTRO 7N Exam 2 Sun's composition - correct answer Composed mostly of gas - hydrogen (73% by mass) and helium (25% by mass)` Sun's stability - correct answer Stable due to balance of gravity (inward force) and gas pressure in its hot interior (outward force) Sun's gas pressure - correct answer Gas pressure provided by nuclear fusion reactions in the Sun's core, going on at a temperature of 15 million degrees Kelvin Sun's diam...

Astro 7N Exam 2; Questions with Complete Solutions 100% Verified A high luminosity star Correct answer-Emits more light than a low-luminosity star If a red giant appears the same brightness as a red main sequence star, which one is farther away? Correct answer-The red giant The heaviest nuclei of all are formed... Correct answer-During a supernova explosion Hydrogen-2 + proton = ____ + energy: Correct answer-Helium-3

PSU Astro 7N Exam 2Hydrogen and Helium What gases make up the sun? Magnetic Activity What causes sunspots? Helium-4 What is made from 4 protons during fusion in the sun? Deuterium Nucleus (and released energy) Step 1 of P-P Chain What forms when two protons collide at very high speeds? Helium-3 Nucleus Step 2 of P-P Chain When deuterium and a proton collide it makes this

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 Exam 2Sun's composition - correct answer Composed mostly of gas - hydrogen (73% by mass) and helium (25% by mass)` Sun's stability - correct answer Stable due to balance of gravity (inward force) and gas pressure in its hot interior (outward force) Sun's gas pressure - correct answer Gas pressure provided by nuclear fusion reactions in the Sun's core, going on at a temperature of 15 million degrees Kelvin Sun's diameter and mass compared to Earth - correct answer Diameter:...

ASTRO 7N MIDTERM 1UNIT 1 - correct answer Gravity - correct answer Newton's First Law - correct answer An object at rest, or in motion in a straight line at a constant speed, will remain in that state unless acted upon by a force Newton's Second Law - correct answer The acceleration of a body due to a force will be in the same direction as the force, with a magnitude directly proportional to its mass Force = mass x acceleration Newton's Third Law - correct answer For every acti...

Astro 7N Exam 1The force of gravity by the Sun keeps the planet in orbit around it, but how do the planets affect the sun? - correct answer They exert an equally strong pull on the sun, causing it move slightly Newton's First Law - correct answer An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. ex: if the sun suddenly disappeared, the Earth would continue in the direction that it...

PSU Astro 7N Exam 1; Questions with Complete Solutions 100% Verified What two properties of a planet affect the gravity we feel on its surface? Correct answerMass and radius Two planets have the same radius. If Planet A is 5 times more mass than Planet B, how does gravity differ on the surfaces of the two planets? Correct answer-Gravity is 5 times stronger on planet A