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| astro300_f18:boardwork_questions [2018/06/12 15:41] – created ccheng | astro300_f18:boardwork_questions [2018/08/21 20:47] (current) – michaelmedford | ||
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| =====Board Work Questions===== | =====Board Work Questions===== | ||
| - | * Why is this statement true? “If we were to measure Doppler shifts in spectra of Saturn' | + | - Why is this statement true? “If we were to measure Doppler shifts in spectra of Saturn' |
| - | * Why is this statement false? “It is easier to use parallax to measure distances to stars in distant galaxies.” | + | - Why is this statement false? “It is easier to use parallax to measure distances to stars in distant galaxies.” |
| - | * Why again is Venus' | + | - Why again is Venus' |
| - | * This homework question asks us to estimate how long it would take for us to lose sight of Jupiter (at 4 AU) if the Sun were to suddenly shut off (i.e., stop shining). The problem says we can assume the Sun-Earth-Jupiter system are all aligned, for simplicity. | + | - This homework question asks us to estimate how long it would take for us to lose sight of Jupiter (at 4 AU) if the Sun were to suddenly shut off (i.e., stop shining). The problem says we can assume the Sun-Earth-Jupiter system are all aligned, for simplicity. |
| - | * What does the professor mean by the “dark side of the Moon”? I said that part of the Moon never receives sunlight and got the question wrong. | + | - What does the professor mean by the “dark side of the Moon”? I said that part of the Moon never receives sunlight and got the question wrong. |
| - | * Why do atoms only accept photons of particular wavelengths? | + | - Why do atoms only accept photons of particular wavelengths? |
| - | * I have to compare the luminosity of two stars. One of them is twice as massive as the other and I know that L goes as the fourth power of M. There aren't enough numbers here for me to calculate the answer. | + | - I have to compare the luminosity of two stars. One of them is twice as massive as the other and I know that L goes as the fourth power of M. There aren't enough numbers here for me to calculate the answer. |
| - | * Can you go over the homework problem: Two stars at the same distance from us are the same temperature, | + | - Can you go over the homework problem: Two stars at the same distance from us are the same temperature, |
| - | * The Sun appears slightly bigger in the sky in January than it does in July. Given this information, | + | - The Sun appears slightly bigger in the sky in January than it does in July. Given this information, |
| - | * It doesn' | + | - It doesn' |
| - | * Why is Orion considered a Winter constellation? | + | - Why is Orion considered a Winter constellation? |
| - | * Why do we need to build some telescopes in space? | + | - Why do we need to build some telescopes in space? |
| - | * I don't understand how Olber' | + | - I don't understand how Olber' |
| - | * How is the Milky Way's rotation curve different than that of our Solar System' | + | - How is the Milky Way's rotation curve different than that of our Solar System' |
| - | * I don't understand how if I'm standing at the equator I can see all the stars. | + | - I don't understand how if I'm standing at the equator I can see all the stars. |
| - | * [lab] How do I find a star's position in my data? Can I take the maximum pixel value? | + | - [lab] How do I find a star's position in my data? Can I take the maximum pixel value? |
| - | * [lab] Why do we need darks and flats when observing? | + | - [lab] Why do we need darks and flats when observing? |
| - | * [lab] How do I know what wavelength each pixel in my data corresponds to? | + | - [lab] How do I know what wavelength each pixel in my data corresponds to? |
