# smiley blocks quiz answers This is the answer key for the [smiley quiz](/lessons/smiley/quiz). ## 1. Describe what `show LEDs` does A function that will display an image on the LED screen ## 2. Why is there an extra empty frame after the smiley face?  <br/> The extra empty image with show LED creates a blinking smiley, allowing the @boardname@ to alternate between showing the smiley and the empty screen. ## 3. Draw the image created with this code ```blocks basic.showLeds(` . # . # . . # . # . . . . . . # . . . # . # # # . `) ```  ## 4. Write the code to make this image ```blocks basic.showLeds(` . # . # . . # . # . . . . . . # . . . # . # # # . `) basic.showLeds(` . . . . . . . . . . . . . . . . . . . . . . . . . `) ``` 