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docs/reference/js/lessons/glowing-sword/quiz-answers.md

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+# glowing sword quiz answers
+
+The answers for the glowing sword quiz. #LED #image #fade #docs
+
+This is the answer key for the [glowing sword quiz](/microbit/lessons/glowing-sword/quiz).
+
+## 1. What is "fade out" ? 
+
+Fade out is a method that gradually decreases the LED screen brightness until the LED lights are turned off.
+
+## 2. Consider the following code
+
+```
+basic.plotImage(`
+. . . . #
+# . . # .
+. # # . .
+. # # . .
+# . . # .
+`)
+led.fadeOut(700)
+```
+
+Rewrite the second line of code to decrease the speed of the fade out for the longest amount of time (Hint: 1000 milliseconds is longest amount of time for a fade out).
+
+<br/>
+
+led->fade out(1000)
+
+## 4. Consider the following code
+
+```
+basic.plotImage(`
+. . . . #
+# . . # .
+. # # . .
+. # # . .
+# . . # .
+`)
+led.fadeOut(1000)
+```
+
+What will cause the image to fade back in twice as fast as it faded out?
+
+<br/>
+
+led->fade in(500)
+