UNDERSTANDING THE UNIVERSE(LL)-W/CODE
3rd Edition
ISBN: 9780393869903
Author: PALEN
Publisher: NORTON
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Chapter 15, Problem 17QAP
To determine
The composition of cosmic rays.
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billion
.stars in the Milky Way
100 and 300 O
100 and 400 O
100 and 200 O
100 and 500 O
No one of the other options O
There are between
The satellite that found the ripples in the cosmic background that led to galaxies is
the Hubble Space Telescope.
the Chandra X-Ray Observatory.
COBE.
the Compton Gamma Ray Observatory.
SOHO.
Radio astronomy involves wavelengths much longer than those of visible light, and many orbiting observatories have probed the universe for radiation of very short wavelengths. What sorts
of objects and physical conditions would you expect to be associated with emission of radiation at very long and very short wavelengths? (Select all that apply.)
very long wavelengths
cold
cold gas
cosmic background radiation
nuclear reactions
++
Opulsars
solar corona
very high-energy processes
very short wavelengths
cold gas
cosmic background radiation
nuclear reactions
pulsars
solar corona
very high-energy processes
Chapter 15 Solutions
UNDERSTANDING THE UNIVERSE(LL)-W/CODE
Ch. 15.1 - Prob. 15.1CYUCh. 15.2 - Prob. 15.2CYUCh. 15.3 - Prob. 15.3CYUCh. 15.4 - Prob. 15.4CYUCh. 15 - Prob. 1QAPCh. 15 - Prob. 2QAPCh. 15 - Prob. 3QAPCh. 15 - Prob. 4QAPCh. 15 - Prob. 5QAPCh. 15 - Prob. 6QAP
Ch. 15 - Prob. 7QAPCh. 15 - Prob. 8QAPCh. 15 - Prob. 9QAPCh. 15 - Prob. 10QAPCh. 15 - Prob. 11QAPCh. 15 - Prob. 12QAPCh. 15 - Prob. 13QAPCh. 15 - Prob. 14QAPCh. 15 - Prob. 15QAPCh. 15 - Prob. 16QAPCh. 15 - Prob. 17QAPCh. 15 - Prob. 18QAPCh. 15 - Prob. 19QAPCh. 15 - Prob. 20QAPCh. 15 - Prob. 21QAPCh. 15 - Prob. 22QAPCh. 15 - Prob. 23QAPCh. 15 - Prob. 24QAPCh. 15 - Prob. 25QAPCh. 15 - Prob. 26QAPCh. 15 - Prob. 27QAPCh. 15 - Prob. 28QAPCh. 15 - Prob. 29QAPCh. 15 - Prob. 30QAPCh. 15 - Prob. 31QAPCh. 15 - Prob. 32QAPCh. 15 - Prob. 33QAPCh. 15 - Prob. 34QAPCh. 15 - Prob. 35QAPCh. 15 - Prob. 36QAPCh. 15 - Prob. 37QAPCh. 15 - Prob. 38QAPCh. 15 - Prob. 39QAPCh. 15 - Prob. 40QAPCh. 15 - Prob. 41QAPCh. 15 - Prob. 42QAPCh. 15 - Prob. 43QAPCh. 15 - Prob. 44QAPCh. 15 - Prob. 45QAP
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- What percentage of matter is ordinary matter? What percentage is dark matter? What makes up the rest of the Universes density?arrow_forwardWhat is dark energy and what evidence do astronomers have that it is an important component of the universe?arrow_forwardWhy is it difficult to determine where cosmic rays come from?arrow_forward
- 5arrow_forwardDark energy is described asarrow_forwardThe light coming from stars is closer to red (long wavelength, low frequency) than we would expect. What does this imply? Your answer: the universe is expanding the universe is rotating the universe is shrinking the universe is staticarrow_forward
- After the Big Bang the Universe expanded and cooled. What was the temperature of the Universe when it became transparent 380,000 years after the Big Bang? Group of answer choices 100 billion K 1 billion K 10 million K 3,000 Karrow_forwardF2 3 #m E Which of the following did NOT happen during the first few minutes after the Big Bang? D O matter and antimatter collided and turned into energy O two or three of the simplest elements fused together O temperatures throughout the universe were hotter than the cores of stars are today some very massive early stars formed с O energy was converted to matter F3 $ 4 R F F4 Q Search % 5 V F5 T ㅁ G O 6 F6 Y B H F7 & 7 COO PrtScn с F8 8 Home L J umien A F9 Aunty Bindungen in Surinam 9 www.mark N M End K F10 Oarrow_forwardWhy do astronomers believe there must be dark matter that is not in the form of atoms with protons and neutrons?arrow_forward
- The Sloan Digital Sky Survey O searches to see whether extra-terrestrial civilizations are sending any digitally recorded music our way O searches for Trans-Neptunian objects, small icy bodies in the outer solar system, whose orbits sometimes resemble Pluto's O takes images and spectra of millions of objects, to find the positions and redshifts of as many galaxies and quasars as possible J' O searches for planets around neighbor stars by looking for changing Doppler shifts in their spectra O searches for supernova remnants that could have pulsars inside and then try to find the pulsars F3 $ R F F4 V Q Search DII % 5 T F5 G ^ 6 B F6 Y H C F7 7 U 900 PrtScn N F8 J 8 Home F9 M P 9 K yapa End F10 O ) Pg 0 <arrow_forwardThe largest structures in the universe are a. star clusters. b. galaxy clusters. c. galaxy superclusters. d. filaments and voids. e. galaxies.arrow_forwardPlace all of the following in order from earliest to the most recent: Dark energy begins acceleration of the expansion of the universe You study for your final in astronomy Last scattering of the Cosmic Microwave Background Radiation First stars and galaxies form Big Bang Universe becomes transparent (no longer opaque) aka photon decoupling time Inflationary Epoch Formation of first complex elements (hydrogen isotopes, helium & lithium)arrow_forward
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