Planets Study guides, Class notes & Summaries

We have learned that the centre of the milky way contains a very massive black hole. We developed this understanding by: - Monitoring the orbital motions of many individual stars in the very central parts of the Milky Way If the sun were to be squashed down small enough to become a black hole, then: - The planets in the solar system would orbit the Sun in unchanged fashion (but would receive no light from it) The first stellar mass black hole identified, Cygnus X-1, was found in 1973. The n...

Hypothesis - correct answerA testable prediction, often implied by a theory An educated guess Theory - correct answerwell-tested explanation that unifies a broad range of observations;In science, a well-substantiated explanation of some aspect of the natural world that can incorporate facts, laws, inferences, and tested hypotheses. Observation - correct answerInformation obtained through the senses. Law - correct answerA descriptive generalization about how some aspect of the natural w...

What two properties of a planet affect the gravity we feel on its surface? - Answer- Mass 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? - Answer- Gravity is 5 times stronger on planet A Say that there were a planet X in our Solar System with a mass 1/4 the mass of Earth and a radius 1/2 the radius of Earth. How will the gravity on its surface compare to the surface gravity of Earth? -...

The Cosmic Perspective, 7th Edition, Testbank | 2022 latest update 1 Copyright © 2014 Pearson Education, Inc. The Cosmic Perspective, 7e (Bennett et al.) Chapter 1 A Modern View of the Universe 1.1 Multiple-Choice Questions 1) What is the meaning of the word cosmos? A) the origin of Earth and life upon it B) the light from a distant astronomical object C) the Milky Way D) the sum total of all matter and energy, that is, everything within and between all galaxies E) the dark sky Ans...

ExtraSolar Planets – Student Guide Astronomy Lab 4 2023.ExtraSolar Planets – Student Guide Astronomy Lab 4 2023.ExtraSolar Planets – Student Guide Astronomy Lab 4 2023.ExtraSolar Planets – Student Guide Astronomy Lab 4 2023.ExtraSolar Planets – Student Guide Astronomy Lab 4 2023.ExtraSolar Planets – Student Guide Astronomy Lab 4 2023.ExtraSolar Planets – Student Guide Astronomy Lab 4 2023.ExtraSolar Planets – Student Guide Astronomy Lab 4 2023.ExtraSolar Planets – Student Guide...

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...

Solar System - Science Olympiad Questions and Answers Rated A+ How did the terrestrial planets form? In the proto-Solar-Sytem, after the sun formed, the rest of the materials orbiting close around it began to clump together too. However, closer to the sun, lighter materials like gases blew away and only rocky material was left, causing the four terrestrial planets, and some of their moons, to form. What are the characteristics of Terrestrial Planets? Solid bodies with a core surrounded...

Astronomy 101 Practice Test Questions and Correct Answers Solar System Characteristics: orbits, what do inner planets do compared to outer, and what about spin - Answer- Counter Clockwise Orbits, Inner planets move faster, Each planet has individual spin Number of planets and names - Answer- 8: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune Gravity - Answer- Attractive force, holds everything together, requires 2 objects pull on each other Gravity on Earth - Answer- 9.8...

Test Bank for Principles of Life 3rd Edition Multiple Choice 1. Which of the following is classified as a living organism by biologists? a. DNA molecule b. Bacterium c. Metabolic energy d. Feather e. Meteorite ANSWER: b 2. The basic structural and physiological unit of most living organisms is the a. aggregate. b. organelle. c. genome. d. membrane. e. cell. ANSWER: e 3. One reason we consider the dormant seed of a desert plant to be alive is that it a. is extracting energy from...

During the formation of the Solar System, smaller particles in the solar nebula combined to form planetesimals, some of which provided the building blocks for planets. The majority of planetesimals did not become planets, however, and some of them remain in the Solar System today as debris left over from the time of planet formation. Asteroids are a special class of planetesimals that orbit around the Sun. Study the distribution of known asteroids shown in this figure, and choose all of t...