Astronomical unit - Study guides, Class notes & Summaries

What is the definition of the Astronomical Unit? correct answer: The average distance between the Sun and the Earth Which sequence is correct when ordered by increasing size? correct answer: Earth Solar System Milky Way Galaxy Galaxy Clusters How many stars does a typical galaxy like the Milky Way Galaxy contain? correct answer: a few hundred billion How long does it take for light to cross the diameter of the Milky Way Galaxy? correct answer: about 100,000 years Which of the ...

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

What are the 7 characteristics of life? correct answers 1. Contains Macros 2. Composed of cells 3. Reproduces 4. Use energy/raw materials 5. Respond to stimuli 6. Homeostasis 7. Adaptation/Evolution What does structure determine? correct answers structure determines function What are the 5 unifying themes of biology? correct answers 1. Organization 2. Information 3. Energy 4. Interactions 5. Evolution What are the levels of biology? correct answers atoms, molecules, organelles...

____ introduced the idea of an off-centered Earth - ️️Ptolemy ____ must point at the sun for there to be eclipses - ️️Nodes, where orbits intersect 1 Astronomical unit (AU) is... - ️️the distance between the Earth and the Sun, which we use for distances within our solar system 1 Lightyear (ly) is... - ️️the distance light travels in a year 1 Parsec (pc) is... - ️️the distance to a star whose parallax is 1 second of arc 1604 Bayer - ️️star map - Uranometria - first to...

Astronomy Unit 8 Practice Exam Questions & Answers. Ranking Task: The Size of Planets, Stars, and Stellar Remnants Part A: Listed following are several astronomical objects. Rank these objects based on their diameter, from largest to smallest. (Note that the neutron star and black hole in this example have the same mass to make your comparison easier, but we generally expect black holes to have greater masses than neutron stars.) - CORRECT ANSWER -main-sequence star of a spectral type A -...

Astronomy: Exam 1 Questions With 100% Verified Answers What is an Astronomical Unit equal to? - answerThe average distance of the Earth from the Sun As the frequency of a photon decreases, the photon energy ________. As the wavelength decreases, the photon energy _______. - answerdecreases; increases About how long does it take light to travel across the diameter of the Milky Way Galaxy? - answer100,000 years because the diameter of the Milky Way Galaxy is 100,000 light years What happen...

How old is the universe? correct answer: 14 billion years old How many kilometers make up a light year? correct answer: 10 trillion kilometers or 10 x 10^12 How many galaxies are present in the Local Group? correct answer: 40 Is there ever a time when we, on the Earth, are not in some type of motion? correct answer: no How far away are the nearest stars, excluding the Sun? correct answer: at least 4 light years away The elements hydrogen and helium were created during the Big...

LUOA Earth Science Module 9 Questions and Answers Graded A+ Newton discovered that the gravity of a planet _________________ as the planet approaches the sun causing the planet to move ____________ around the sun in that part of its orbit. increased, faster Newton discovered that if two planetary objects moved twice as far from each other ______________________. their gravity reduced by 1/4th Explain Kepler's 2nd law of planetary motion, also known as the Law of Areas. Kepler's 2nd law of p...

Astronomy correct answers has had important practical applications including the development of Newtonian mechanics, on which much of modern technology is based The intellectual foundation of science is correct answers observation, logic, and skepticism The scientific method is a major force in science and has been developed to ensure that correct answers theories about physical phenomena agree with what we find in experiments and observations Forms of radiation which are not visible co...

In the geocentric model of the Solar System, what is at the center of the solar system? correct answers earth Our solar sytem lies on what part of the Milky Way? correct answers outer arm What element was first to form? correct answers Hydrogen What did our solar system begin as? correct answers second or third generation nebula What is the oldest planet in the solar system? correct answers all the same age What are the two most common components of Earth's atmosphere? correct an...