# Chapter 1. Understanding Light

Map Learning Exercises

### Question Peak Wavelength

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{"title":"peaks1","description":"The peak wavelength is the highest point on the curve. This shows the wavelength that is being most intensely emitted. BUT REMEMBER, the star is still emitting at other wavelengths.","type":"correct","color":"#99cc00","code":"[{\"shape\":\"circle\",\"coords\":\"70,70,19\"}]"} {"title":"peaks2","description":"The peak wavelength is the highest point on the curve. This shows the wavelength that is being most intensely emitted. BUT REMEMBER, the star is still emitting at other wavelengths.","type":"correct","color":"#993300","code":"[{\"shape\":\"circle\",\"coords\":\"110,335,18\"}]"} {"title":"peaks3","description":"The peak wavelength is the highest point on the curve. This shows the wavelength that is being most intensely emitted. BUT REMEMBER, the star is still emitting at other wavelengths.","type":"correct","color":"#333300","code":"[{\"shape\":\"circle\",\"coords\":\"171,469,17\"}]"}
Correct.

### Question Wien's Law

{"title":"coolest","description":"You could have used Wien's Law, or perhaps even Stefan-Boltzmann's Law to come to this conclusion....","type":"correct","color":"#99cc00","code":"[{\"shape\":\"poly\",\"coords\":\"68,492,186,457,366,496,339,499,212,480,165,480,94,499,49,498\"}]"} {"title":"Choice2","description":"You can use Wien's Law, or perhaps even Stefan-Boltzmann's Law, to answer this question. Try again.","type":"incorrect","color":"#993300","code":"[{\"shape\":\"poly\",\"coords\":\"44,497,76,455,104,353,193,434,325,481,463,497,469,490,326,470,202,418,116,319,84,330,58,446\"}]"} {"title":"Choice2 COPY","description":"You can use Wien's Law, or perhaps even Stefan-Boltzmann's Law, to answer this question. Try again.","type":"incorrect","color":"#333300","code":"[{\"shape\":\"poly\",\"coords\":\"53,456,68,353,71,82,153,286,251,407,336,456,484,488,491,477,341,441,263,393,171,267,68,32,55,63,46,343,42,480\"}]"}
Correct.

### Question Three stars are pointed out in these images. Which stars has the lowest temperature?

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{"title":"coolest","description":"According to Wein's Law, the lower the temperature of a star, the longer the wavelength. Red light has a longer wavelength than orange or yellow.","type":"correct","color":"#000000","code":"[{\"shape\":\"rect\",\"coords\":\"2,6,158,180\"}]"}
Correct.

### Question Which part of this setup is responsible for turning the light into useful information?

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{"title":"choice ","description":"That's also an important part of this setup, but it's not the part that is most responsible for making the light reveal its information.","type":"incorrect","color":"#000000","code":"[{\"shape\":\"poly\",\"coords\":\"46,98,131,74,134,149,45,180\"}]"} {"title":"choice COPY","description":"That's also an important part of this setup, but it's not the part that is most responsible for making the light reveal its information.","type":"incorrect","color":"#000000","code":"[{\"shape\":\"circle\",\"coords\":\"173,229,43\"}]"} {"title":"choice COPY COPY","description":"The diffraction grating, just like a prism, separates the light so that we can see the information it contains.","type":"correct","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"188,71,287,148\"}]"} {"title":"choice COPY COPY COPY","description":"That's also an important part of this setup, but it's not the part that is most responsible for making the light reveal its information.","type":"incorrect","color":"#000000","code":"[{\"shape\":\"circle\",\"coords\":\"314,229,44\"}]"} {"title":"choice COPY COPY COPY COPY","description":"That's also an important part of this setup, but it's not the part that is most responsible for making the light reveal its information.","type":"incorrect","color":"#333333","code":"[{\"shape\":\"rect\",\"coords\":\"334,74,404,135\"}]"}
Correct.