The haphazard terrain of Miranda suggests it was broken up by impact after it had differentiated, then fell back together as a jumbled maze
Indicate whether the statement is true or false
TRUE
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Based purely on its size, which of these planetary bodies is least geologically active?
a. Mercury b. Venus c. Earth d. Mars e. Io
During the volcanic eruption of Mt. Pelee in 1902, an incredibly hot "burning cloud" rolled down the mountain and incinerated the town of Saint-Pierre. From the damage done, the temperature in the cloud was estimated at 700°C. If the air temperature was 20°C and a mole of air is 29 grams, estimate the molecular weight of the gas in the "burning cloud" that made it heavier than the surrounding air. (As a follow-on, estimate the most probable composition of the cloud. Some typical volcanic gases are H2S, SO2, H2SO4, CO2, NO.)
What will be an ideal response?
A "rainbow" appears on an oil slick or soap bubble due to:
1.refraction of light. 2.transmission of light. 3.dispersion of light. 4.interference of light. 5.scattering of light. 6.reflection of light. 7.None of the above.
Which of the following statements about halo stars is false?
A) Halo stars have random orbits about the Milky Way center. B) Halo stars are no longer being formed at the current epoch. C) All halo stars are less massive than our Sun. D) Halo stars are made entirely of hydrogen and helium with no heavy elements. E) Halo stars are some of the oldest known objects in the universe.