pxt-calliope/olddocs/lessons/screen-wipe/quiz.md

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# screen wipe blocks quiz
Clear the screen by pressing the "A" button after an animation has been played
## Name
## Directions
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Use this activity document to guide your work in the [screen wipe activity](/lessons/screen-wipe/activity)
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Answer the questions while completing the tutorial. Pay attention to the dialogues!
## 1. Describe what "clear screen" does?
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## 2. Write the code that clears an image from the screen
![](/static/mb/blocks/lessons/screen-wipe-4.png)
## 3. Write the condition that will detect on button A pressed
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## 4. Write the code that will clear show LEDS from the screen after pressing button A
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