Physics

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The__________is the fate of the Universe if dark energy increases with time and galaxies, stars, and ... Started by K@	1 Replies 69 Views	Jul 27, 2018 by Animal_Goddess
According to Olbers's paradox, the night sky should: A) be pitch black. B) be black with tiny ... Started by olgavictoria	1 Replies 58 Views	Jul 27, 2018 by carlsona147
The protons and neutrons that make up normal matter belong to a family of subatomic particles called ... Started by kamilo84	3 Replies 72 Views	Jul 27, 2018 by DHRUVSHAH
_____ is the energy believed to fill empty spaces and drive the acceleration of the expanding ... Started by Deast7027	1 Replies 57 Views	Jul 27, 2018 by chjcharjto14
__________is a possible form of dark energy that can change in strength as the Universe ages. A) ... Started by B	1 Replies 49 Views	Jul 27, 2018 by Sarahjh
Which of the following is true of the Universe when it was three minutes old? A) Photons ... Started by CBme	1 Replies 33 Views	Jul 27, 2018 by Silverbeard98
_____ is the part of the Universe that you can see from your location in space and time. A) ... Started by silviawilliams41	3 Replies 35 Views	Jul 27, 2018 by carolinefletcherr
Which of the following is true of redshift? A) Radiation that comes from great distance has ... Started by bio_gurl	1 Replies 33 Views	Jul 27, 2018 by AmberC1996
Which of the following is a main criterion separating the three models of the Universe? A) The ... Started by jlmhmf	1 Replies 52 Views	Jul 27, 2018 by aloop
Simple observations of the darkness of the night sky and the redshifts of the galaxies tell you ... Started by jho37	1 Replies 52 Views	Jul 27, 2018 by shewald78
The _____ is the high-density, high-temperature state from which the expanding Universe of galaxies ... Started by tth	3 Replies 76 Views	Jul 27, 2018 by ryrychapman11
The hot gas of the big bang seems to be cool at about 2.7 K because: A) the expansion of the ... Started by B	1 Replies 78 Views	Jul 27, 2018 by mmj22343
In the context of a big bang model, identify a true statement about the flatness problem. A) It ... Started by jhjkgdfhk	1 Replies 108 Views	Jul 27, 2018 by ebonylittles
Clusters of galaxy clusters are known as _____. A) megaclusters B) hyperclusters C) ... Started by student77	1 Replies 109 Views	Jul 27, 2018 by alvinum
_____ is dark matter which is made of slow moving particles. A) Cold dark matter B) Rayon C) ... Started by Bernana	3 Replies 134 Views	Jul 27, 2018 by Yixagurpuldink
According to Edwin P. Hubble's discovery in 1929, the sizes of galaxy redshifts are: A) ... Started by gonzo233	1 Replies 90 Views	Jul 27, 2018 by jaymee143
Which of the following is true of a flat Universe? A) It is two dimensional. B) It closes upon ... Started by Metfan725	1 Replies 63 Views	Jul 27, 2018 by CAPTAINAMERICA
Discuss the problems of the big bang model. What will be an ideal ... Started by jc611	1 Replies 49 Views	Jul 27, 2018 by recede
Discuss the characteristics of the Universe as observed from Earth. What will be an ideal ... Started by charchew	3 Replies 93 Views	Jul 27, 2018 by bhavsar
Discuss the solution to the flatness problem and horizon problem of the Universe. What will be an ... Started by big1devin	1 Replies 84 Views	Jul 27, 2018 by jamesnevil303
Carbon chains are harder to assemble and disassemble than their silicon counterparts. Indicate ... Started by fnuegbu	1 Replies 88 Views	Jul 27, 2018 by fur
Deoxyribonucleic acid (DNA) is a messenger molecule. Indicate whether the statement is true or ... Started by Themember4	1 Replies 84 Views	Jul 27, 2018 by lkoler
The first cells that must have formed on Earth must have been complex single-celled organisms much ... Started by K@	3 Replies 160 Views	Jul 27, 2018 by shailee
Evolution is actually random. Indicate whether the statement is true or ... Started by littleanan	1 Replies 64 Views	Jul 27, 2018 by Jsherida
Scientists hypothesize that a process of chemical evolution eventually concentrated various small ... Started by formula1	1 Replies 55 Views	Jul 27, 2018 by owenfalvey