# screen wipe quiz blocks answers Clear the screen by pressing the "A" button after an animation has been played This is the answer key for the [screen wipe quiz](/lessons/screen-wipe/quiz). ## 1. What does the function "clear screen" do on the @boardname@? This function turns off all the LED lights on the LED screen. ## 2. Write the line of code that displays this image.  ```blocks basic.showLeds(` . # . # . . # . # . . . # . . # . . . # . # # # . `) ``` ## 3. Write the condition that will detect on button A pressed ```blocks input.onButtonPressed(Button.A, () => { }) ``` ## 4. Write the code that will clear show LEDS from the screen after pressing button A ```blocks input.onButtonPressed(Button.A, () => { basic.clearScreen() }) ```