49 lines
889 B
Markdown
49 lines
889 B
Markdown
|
# 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)
|
||
|
|