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16 Cards in this Set
- Front
- Back
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Which region of the Electromagnetic Spectrum has photons with the highest energies? |
Blue Visible Light |
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The opening step in the Suns Fusion reactions combines two protons What is Produced |
A hydrogen, A positron, and A neutrino |
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Viewed through the Earths atmosphere a double star is often seen only as a single fuzzy ball of light. Suppose you observe only brightness changes as the starts ellipse one another, What can you learn from timing these. |
The relative diameters of the two stars |
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In a binary star system, Which star would have the larger red shift |
The lower mass star, when moving away from you |
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In an unbiased sample of typical stars in the galaxy, most of them would be what type? |
Low luminosity main-sequence stars
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Most of the Visible wavelength light comes from which layer of the sun? |
Photosphere |
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Temperature is close to 300k. the Sun's surface is close to 600k. How many times more energy is radiated by a square inch of the Sun compared to a square inch of your skin |
20^4 |
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Where is the Accretion disk located in relation to the black hole |
In a flattened outside the event horizon region |
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Which is responsible for an Emssion nebula (or H II region)? |
An A or B star with surrounding interstallar gas |
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what does a neutron star have in common with the Nucleus of an Atom |
They both consist of nuclear particles packed as a close together as possible |
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The density of a white dwarf is almost the same density of |
Not earth, Not Water, Not sun. NONE OF THE ABOVE |
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For these mass and radius which is probably a neutron star |
Two solar masses with a radius of 15km |
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Special relativity predicts that the observes time that an event takes to happen depends on it's relative motion in |
It requires more time to decay. |
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Where are pulsars located in the sky |
Along the milky way because they are related to stars in the galaxy |
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How often do massive-star collapse supernovae in our Milky way Galaxy? |
About once every few decades |
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A white dwarf gets it's supporting pressure from... |
Electrons |
