qu.1.topic=Relating B-V and Temperature@ qu.1.1.mode=Non Permuting Multiple Choice@ qu.1.1.editing=useHTML@ qu.1.1.question=How does the color of a star compare to the sun if it is significantly $temp than the sun?@ qu.1.1.algorithm= $num=rint(2); $temp=switch($num,"hotter","colder"); $answer=switch($num,1,2); @ qu.1.1.answer=$answer@ qu.1.1.choice.1=blue@ qu.1.1.choice.2=redder@ qu.1.1.choice.3=basically the same color@ qu.1.2.mode=Non Permuting Multiple Choice@ qu.1.2.editing=useHTML@ qu.1.2.question=If a star is $temp than the sun, how does the temperature of the star compare to the sun?@ qu.1.2.algorithm= $num=rint(2); $temp=switch($num,"bluer","redder"); $answer=switch($num,1,2); @ qu.1.2.answer=$answer@ qu.1.2.choice.1=higher temperature@ qu.1.2.choice.2=colder temperature@ qu.1.2.choice.3=basically the same temperature@ qu.2.topic=UBVR Central Wavelengths@ qu.2.1.mode=Non Permuting Multiple Choice@ qu.2.1.editing=useHTML@ qu.2.1.question=What is the central wavelength of $filter filter?@ qu.2.1.algorithm= $num=rint(4); $filter=switch($num,"an ultraviolet","a blue","a visible (green)","a red"); $answer=switch($num,1,2,3,4); @ qu.2.1.answer=$answer@ qu.2.1.choice.1=350 nm@ qu.2.1.choice.2=440 nm@ qu.2.1.choice.3=530 nm@ qu.2.1.choice.4=600 nm@ qu.2.1.choice.5=750 nm@ qu.2.2.mode=Non Permuting Multiple Choice@ qu.2.2.editing=useHTML@ qu.2.2.question=Which of the following filter would have a central wavelength of $peak?@ qu.2.2.algorithm= $num=rint(4); $peak=switch($num,"350 nm","440 nm","530 nm","600 nm","750 nm"); $answer=switch($num,1,2,3,4); @ qu.2.2.answer=$answer@ qu.2.2.choice.1=ultraviolet@ qu.2.2.choice.2=blue@ qu.2.2.choice.3=visible (green)@ qu.2.2.choice.4=red@ qu.2.2.choice.5=infrared@ qu.3.topic=Geometry of Spectra@ qu.3.1.mode=Multiple Choice@ qu.3.1.editing=useHTML@ qu.3.1.question=
Above is a hot blackbody source represented by the lightbulb. The cloud is a cool, low density gas. What type of spectra would an observer looking from the perspective labeled $perspective see?@ qu.3.1.algorithm= $num=rint(3); $perspective=switch($num,"#1","#2","#3"); $answer=switch($num,1,2,3); @ qu.3.1.answer=$answer@ qu.3.1.choice.1=continuous@ qu.3.1.choice.2=absorption@ qu.3.1.choice.3=emission@ qu.3.2.mode=Non Permuting Multiple Choice@ qu.3.2.editing=useHTML@ qu.3.2.question=
Above is a hot blackbody source represented by the lightbulb. The cloud is a cool, low density gas. Which observer will see $spectra spectrum?@ qu.3.2.algorithm= $num=rint(3); $spectra=switch($num,"a continuous","an absorption","an emission"); $answer=switch($num,1,2,3); @ qu.3.2.answer=$answer@ qu.3.2.choice.1=#1@ qu.3.2.choice.2=#2@ qu.3.2.choice.3=#3@ qu.4.topic=Wien/Stefan-Boltzmann Laws@ qu.4.1.mode=Multiple Choice@ qu.4.1.editing=useHTML@ qu.4.1.question=

The blackbody curve for an object at T = 10000 K is shown in the figure. If the temperature is $dir to $temp…@ qu.4.1.algorithm= $num=rint(2); $dir=switch($num,"raised","lowered"); $temp=switch($num,"12500 K","7500 K"); $answer=switch($num,1,4); @ qu.4.1.answer=$answer@ qu.4.1.choice.1=the area under the curve increases and the peak shifts to the left.@ qu.4.1.choice.2=the area under the curve increases and the peak shifts to the right.@ qu.4.1.choice.3=the area under the curve decreases and the peak shifts to the left.@ qu.4.1.choice.4=the area under the curve decreases and the peak shifts to the right.@ qu.4.2.mode=Multiple Choice@ qu.4.2.editing=useHTML@ qu.4.2.question=

The blackbody curve for an object at T = 10000 K is shown in the figure. If the temperature is $dir to $temp…@ qu.4.2.algorithm= $num=rint(2); $dir=switch($num,"raised","lowered"); $dir2=switch($num,"increases","decreases"); $dir3=switch($num,"doubles","is halved"); $temp=switch($num,"20000 K","5000 K"); $answer=switch($num,4,3); @ qu.4.2.answer=$answer@ qu.4.2.choice.1=the area under the curve $dir3 and the peak wavelength doubles.@ qu.4.2.choice.2=the area under the curve $dir3 and the peak wavelength is halved.@ qu.4.2.choice.3=the area under the curve $dir2 by a factor of 16 and the peak wavelength doubles.@ qu.4.2.choice.4=the area under the curve $dir2 by a factor of 16 and the peak wavelength is halved.@ qu.5.topic=Distributions and Filters@ qu.5.1.mode=Multiple Choice@ qu.5.1.editing=useHTML@ qu.5.1.name=Missing Output@ qu.5.1.question=
Source

+
Filter

Output
Which output below goes with the setup above?@ qu.5.1.algorithm= $input=rint(7); $filter=rint(10); $num1=rint(9)+1; $num2=rint(9)+1; $filter1=if(gt($filter+$num1,9),$filter+$num1-10,$filter+$num1); $filter2=if(gt($filter+$num2,9),$filter+$num2-10,$filter+$num2); condition:not(eq($num1,$num2)); @ qu.5.1.answer=1@ qu.5.1.choice.1= @ qu.5.1.choice.2= @ qu.5.1.choice.3= @ qu.5.2.mode=Multiple Choice@ qu.5.2.editing=useHTML@ qu.5.2.name=Missing Filter@ qu.5.2.question=
Source

+
Filter

Output
Which filter below goes with the above setup?@ qu.5.2.algorithm= $input=rint(7); $filter=rint(10); $num1=rint(9)+1; $num2=rint(9)+1; $filter1=if(gt($filter+$num1,9),$filter+$num1-10,$filter+$num1); $filter2=if(gt($filter+$num2,9),$filter+$num2-10,$filter+$num2); condition:not(eq($num1,$num2)); @ qu.5.2.answer=1@ qu.5.2.choice.1= @ qu.5.2.choice.2= @ qu.5.2.choice.3= @ qu.5.3.mode=Multiple Choice@ qu.5.3.editing=useHTML@ qu.5.3.name=Missing Input@ qu.5.3.question=
Source

+
Filter

Output
Which source below goes with the above setup?@ qu.5.3.algorithm= $input=rint(7); $filter=rint(10); $num1=rint(6)+1; $num2=rint(6)+1; $input1=if(gt($input+$num1,6),$input+$num1-7,$input+$num1); $input2=if(gt($input+$num2,6),$input+$num2-7,$input+$num2); condition:not(eq($num1,$num2)); @ qu.5.3.answer=1@ qu.5.3.choice.1= @ qu.5.3.choice.2= @ qu.5.3.choice.3= @ qu.6.topic=Identify Blackbody Curve@ qu.6.1.mode=Multiple Choice@ qu.6.1.editing=useHTML@ qu.6.1.question=Which of the following is a blackbody curve?@ qu.6.1.algorithm= $input1=rint(6)+1; $input2=rint(6)+1; $input3=rint(6)+1; condition:not(eq($input1,$input2)); condition:not(eq($input2,$input3)); condition:not(eq($input3,$input1)); @ qu.6.1.answer=1@ qu.6.1.choice.1= @ qu.6.1.choice.2= @ qu.6.1.choice.3= @ qu.6.1.choice.4= @ qu.7.topic=Misc Questions@ qu.7.1.mode=Multiple Choice@ qu.7.1.editing=useHTML@ qu.7.1.question=Which of the following is NOT an example of a filter?@ qu.7.1.answer=1@ qu.7.1.choice.1=a measuring cup for cooking@ qu.7.1.choice.2=suit and tie required for entrance into a restaurant@ qu.7.1.choice.3=parole board for convicted felons@ qu.7.1.choice.4=language censor for public broadcast television@ qu.7.2.mode=Multiple Choice@ qu.7.2.editing=useHTML@ qu.7.2.question=To get a good response, that is a strong measurement, from a very cool star, what kind of filters would be most useful?@ qu.7.2.answer=1@ qu.7.2.choice.1=a filter which lets red light pass through@ qu.7.2.choice.2=a filter which lets green light pass through@ qu.7.2.choice.3=a filter which lets blue light pass through@ qu.7.2.choice.4=a filter which lets ultraviolet light pass through@ qu.8.topic=Light Basics@ qu.8.1.mode=Non Permuting Multiple Choice@ qu.8.1.editing=useHTML@ qu.8.1.question=Which of the following is not part of the electromagnetic spectrum?@ qu.8.1.answer=5@ qu.8.1.choice.1=the light from an incandescent light bulb@ qu.8.1.choice.2=the radiation produced in a microwave oven@ qu.8.1.choice.3=the heat from the heating coils in a conventional oven@ qu.8.1.choice.4=the radiation used to take an x-ray of bones@ qu.8.1.choice.5=all of the above are part of the electromagnetic spectrum@ qu.8.1.choice.6=none of the above are part of the electromagnetic spectrum@ qu.8.2.mode=Multiple Choice@ qu.8.2.editing=useHTML@ qu.8.2.question=Which term describes how much energy per unit time a light source emits (from the observer's perspective)?@ qu.8.2.answer=5@ qu.8.2.choice.1=wavelength@ qu.8.2.choice.2=color@ qu.8.2.choice.3=frequency@ qu.8.2.choice.4=blackbody@ qu.8.2.choice.5=intensity@