Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Question
Chapter 5, Problem 21QAP
To determine
The size of Solar-System with respect to the size of the universe.
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Compare the values of the number of grains of sand in all earth’s beaches with the number of stars in the universe – which is greater?
Number of sand grains
Number of stars
They are about the same.
Astronomers frequently say that “there are more stars in the universe than there are grains of sand on all the beaches on the earth”. Given that a typical grain of sand is about 0.5 – 1.0 mm in diameter, estimate the number of grains of sand on all the earth’s beaches. The diameter of the Earth is 12,742 km.
About 1011
About 1016
About 1021.
Put these in order from smallest to largest
Universe
Galaxy
Solar system
Distance between earth and the sun
Atoms
Earth
Sun
Bacteria
Person
Moon
Chapter 5 Solutions
Understanding Our Universe
Ch. 5.1 - Prob. 5.1CYUCh. 5.2 - Prob. 5.2CYUCh. 5.3 - Prob. 5.3CYUCh. 5.4 - Prob. 5.4CYUCh. 5.5 - Prob. 5.5CYUCh. 5.6 - Prob. 5.6CYUCh. 5 - Prob. 1QAPCh. 5 - Prob. 2QAPCh. 5 - Prob. 3QAPCh. 5 - Prob. 4QAP
Ch. 5 - Prob. 5QAPCh. 5 - Prob. 6QAPCh. 5 - Prob. 7QAPCh. 5 - Prob. 8QAPCh. 5 - Prob. 9QAPCh. 5 - Prob. 10QAPCh. 5 - Prob. 11QAPCh. 5 - Prob. 12QAPCh. 5 - Prob. 13QAPCh. 5 - Prob. 14QAPCh. 5 - Prob. 15QAPCh. 5 - Prob. 16QAPCh. 5 - Prob. 17QAPCh. 5 - Prob. 18QAPCh. 5 - Prob. 19QAPCh. 5 - Prob. 20QAPCh. 5 - Prob. 21QAPCh. 5 - Prob. 22QAPCh. 5 - Prob. 23QAPCh. 5 - Prob. 24QAPCh. 5 - Prob. 25QAPCh. 5 - Prob. 27QAPCh. 5 - Prob. 28QAPCh. 5 - Prob. 29QAPCh. 5 - Prob. 30QAPCh. 5 - Prob. 31QAPCh. 5 - Prob. 32QAPCh. 5 - Prob. 34QAPCh. 5 - Prob. 35QAPCh. 5 - Prob. 36QAPCh. 5 - Prob. 37QAPCh. 5 - Prob. 38QAPCh. 5 - Prob. 39QAPCh. 5 - Prob. 40QAPCh. 5 - Prob. 41QAPCh. 5 - Prob. 42QAPCh. 5 - Prob. 43QAPCh. 5 - Prob. 44QAPCh. 5 - Prob. 45QAP
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- The time of the Cambrian explosion is listed on the second page of the Universe Bowl on the inside cover of the printed book. Express that time in scientific notation.arrow_forwardWhat is the difference between the Solar System, the Galaxy, and the Universe?arrow_forwardThe Drake Equation is a tool for estimating ... A) the number of alien civilizations that have visited the Earth in the past B) the number of planets in the Milky Way that contain civilizations intelligent enough to communicate through space. C) the number of habitable planets in the Milky Way where life has developedarrow_forward
- Arrange the following in order of increasing size: Earth; the Sun; Earths orbit around the Sun; the Moon; you; the Milky Way Galaxy; the Moons orbit around Eartharrow_forwardWhat will be the long-term future of our Galaxy?arrow_forwardRank these objects from oldest to youngest the Solar System, the Universe, the Milky Way Galaxy.arrow_forward
- How do we know the age of the Sun?arrow_forwardAn astronomical unit (AU) is defined as the average distance between the solar system and Alpha Centauri the Earth and the Moon the Milky Way Galaxy and the Andromeda Galaxy the Earth and the Sunarrow_forwardPut these components from largest to smallest 1. comet 2. star 3. galaxy 4. nebula 5. planet 6. universearrow_forward
- 1 million kilometers can be expressed in scientific notation as: 10x10^6 km 10x10^-6 km none of these 1x10^6 km 1x10^-6kmarrow_forwardAssuming it were possible, how long would it take a car traveling at 60 miles per hour to leave the solar system?arrow_forwardPlease list 4 different forms of energy present in the universe?arrow_forward
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