Nebula - Study guides, Class notes & Summaries

origin of earth - • Supernova: death of a star (great explosion) • Supernova happened 4.6 bya, dust and gas flattens to a disk and spins faster due to gravity and solar nebula formed. • Solar Nebula: describes formation of Earth 4.5 bya • Nebula: gas cloud origin of oceans - • volcanic explosion, H2O condensed and rained down for thousands of years to create oceans • icy comets hitting earth (responsible for 1/2 of earths ocean water) origin of life - • 4.5 bya ...

c correct answers 1. Where did all of the heavy elements that are found inside of your own body (e.g., carbon and nitrogen, phosphorous, copper and gold) get created? a. 50% of the heavy elements were created directly from the Big Bang and the other 50% were created later inside of stars or when stars exploded. b. 10% of the heavy elements were created directly from the Big Bang and about 90% were created later inside of stars or when stars exploded. c. 100% of the heavy elements were c...

White dwarfs: properties - Remaining cores of dead, low mass stars Electron degeneracy pressure supports them against gravity Slowly fade with time Sirius and its hot WD companion White dwarfs with same mass as Sun are about same size as Earth; slowly cooling Typical density 10^6 gram / cubic cm Higher mass white dwarfs are smaller Cannot be more massive than 1.4MSun, the Chandrasekhar limit WDs in binaries: nova, supernova Type I - Mass falls toward white dwarf from binary companion ...

(In the absence of a strong magnetic field), what is the chief factor that determines what type of electromagnetic radiation objects give off: - ️️their temperature A college friend of yours who has been postponing taking any science courses hears you talking about the generation of nuclear energy in the Sun and makes the following observation: "The whole idea of the atomic nucleus is pretty ridiculous. If an oxygen nucleus consists of eight protons and eight neutrons, the charge on that n...

Io experiences tidal heating primarily because __________. correct answers Io's elliptical orbit causes the tidal force on Io to vary as it orbits Jupiter. As you learned in Part A, Io's elliptical orbit is necessary to its tidal heating. This elliptical orbit, in turn, is a result of the orbital resonance among Io, Europa, and Ganymede. This orbital resonance causes Io to have a more elliptical orbit than it would otherwise, because __________. correct answers Io periodically passes Europa...

PHYS 284 Latest Exam With Complete Solution 1) What percentage of the mass of the solar nebula consisted of elements other than hydrogen and helium? A) 0 percent B) 0.1 percent C) 2 percent D) 20 percent E) 80 percent - CORRECT ANSWER-Answer: C 2) Where did the elements heavier than hydrogen and helium come from? A) They were produced in the Big Bang. B) They evolved from hydrogen and helium shortly after the Big Bang. C) They were produced inside stars. D) They were prod...

big bang - ️️-still energy left from explosion -discovered in 1960s -assumes earth came from material -Kant created most pop model of formation (planet accretion) nebula - ️️beginning form of planets many bump into others and combine earths composition - ️️-more dense material in center -heterogeneous (bc heat and dense elements melt and flow) -accretion -compression -radioactive decay 3 layers of earth - ️️-based on composition -core, mantle, crust -metallic c...

During the formation of the Solar System, smaller particles in the solar nebula combined to form planetesimals, some of which provided the building blocks for planets. The majority of planetesimals did not become planets, however, and some of them remain in the Solar System today as debris left over from the time of planet formation. Asteroids are a special class of planetesimals that orbit around the Sun. Study the distribution of known asteroids shown in this figure, and choose all of t...

Space Exploration|Complete Questions with A+ Graded Answers main sequence a diagonal area on an H-R diagram that includes more than 90 percent of all stars white dwarf A small, hot, dim star that is the leftover center of an old star Luminosity the true brightness of an object light year the distance light travels in one year blueshifted the doppler shift toward shorter wavelengths of light from an approaching object Redshifted stars moving away from Earth Ne...

Ursa Major - Answer-circumpolar constellation at 45N Big dipper - Answer-asterism Orion - Answer-asterism Taurus - Answer-zodiac constellation Draco - Answer-circumpolar at 45N Northern Cross - Answer-asterism Your birth sign is - Answer-the constellation behind the sun at the moment of your birth We are currently living in the age of - Answer-Pisces What is the location of of our solar system in the Milk Way galaxy? - Answer-Halfway out from the center How do we know the Milky Way gala...