Physics

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The vernal equinox marks the beginning of spring in the northern hemisphere. Indicate whether the ... Started by jake	1 Replies 130 Views	Jul 27, 2018 by javimendoza7
Io's surface volcanism is driven by phase changes of sulfur and its compounds. Indicate whether ... Started by Jkov05	3 Replies 84 Views	Jul 27, 2018 by T4T
In order to predict whether a star will eventually fuse oxygen into a heavier element, you mainly ... Started by Redwolflake15	1 Replies 80 Views	Jul 27, 2018 by SVictor
If Earth had no atmosphere, its temperature would be A) somewhat warmer than the freezing ... Started by Starlight	1 Replies 101 Views	Jul 27, 2018 by sierrahalpin
Rank these planets in order of the strength of the greenhouse effect on the planet, from the least ... Started by meagbuch	1 Replies 60 Views	Jul 27, 2018 by missalyssa26
A Kuiper Belt object was discovered that may be larger than Pluto. Indicate whether the statement ... Started by hubes95	3 Replies 88 Views	Jul 27, 2018 by wilsonbho
An hour of right ascension corresponds to 60 degrees in the sky. Indicate whether the statement ... Started by ec501234	1 Replies 128 Views	Jul 27, 2018 by Koolkid240
Barringer Crater in Arizona is an example of a meteorite impact. Indicate whether the statement ... Started by cagreen833	1 Replies 248 Views	Jul 27, 2018 by macagn
From Earth, the Sun and Moon have about the same angular diameter. Indicate whether the statement ... Started by CORALGRILL2014	1 Replies 196 Views	Jul 27, 2018 by spencer.martell
Sim-Planet: Make the difference between the night and day temperatures larger. A) Increase the ... Started by K@	3 Replies 96 Views	Jul 27, 2018 by lcapri7
Why is Venus so much hotter than Earth? A) Venus has significant amounts of carbon dioxide in its ... Started by Beheh	1 Replies 120 Views	Jul 27, 2018 by jliusyl
Most astronomers now believe the demise of the dinosaurs 65 million years ago was caused by a large ... Started by bobypop	1 Replies 140 Views	Jul 27, 2018 by Cnarkel
When an electron in an atom goes from a higher energy state to a lower energy state, the atom A) ... Started by pane00	1 Replies 217 Views	Jul 27, 2018 by bobsmith
How do we determine the amount of dark matter in elliptical galaxies? A) We measure the ... Started by bcretired	3 Replies 121 Views	Jul 27, 2018 by s.meritte
The Antarctic ice-core plot of carbon dioxide (ppm) shows peaks and valleys at about the same times ... Started by tfester	1 Replies 57 Views	Jul 27, 2018 by Dnite
What effect or effects would be most significant if the Moon's orbital plane were exactly the same ... Started by sdfghj	1 Replies 53 Views	Jul 27, 2018 by sultana.d
Suppose you try to bring two protons close together. Because of the electromagnetic force, the two ... Started by nramada	1 Replies 63 Views	Jul 27, 2018 by bookworm410
The Sun is gradually increasing in luminosity as it ages. It is 20 more luminous than it was when it ... Started by lilldybug07	3 Replies 60 Views	Jul 27, 2018 by macmac
At the equinoxes, the declination of the Sun must be zero degrees. Indicate whether the statement ... Started by Anajune7	1 Replies 85 Views	Jul 27, 2018 by hollysheppard095
When we measure the broadening of absorption lines in the spectrum of an elliptical galaxy, we can ... Started by dmcintosh	1 Replies 69 Views	Jul 27, 2018 by C.mcnichol98
What is the only force that can overcome the repulsion between two positively charged nuclei to bind ... Started by itsmyluck	1 Replies 156 Views	Jul 27, 2018 by miss_1456@hotmail.com
As it orbits the Earth, the Moon appears to move its own diameter (0.5 degrees) eastward every hour ... Started by bb	3 Replies 125 Views	Jul 27, 2018 by samiel-sayed
What conditions are required for a lunar eclipse? A) The phase of the Moon must be new, and the ... Started by sammy	1 Replies 62 Views	Jul 27, 2018 by af
Which two processes can generate energy to help a star maintain its internal thermal pressure? A) ... Started by renzo156	1 Replies 56 Views	Jul 27, 2018 by durant1234
Which of the following statements about thermal radiation is always true? A) A hot object emits ... Started by anshika	1 Replies 63 Views	Jul 27, 2018 by tkempin