2016-03-26 00:47:20 +01:00
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# flashing heart blocks quiz answers
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Learn how to create an image with a variable.
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This is the answer key for the [flashing heart quiz](/microbit/lessons/flashing-heart/quiz).
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## 1. Describe what pause does
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Pause program execution for the specified number of milliseconds.
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## 2. Write the code that leaves an image on the screen for 1 second (1000 milliseconds)
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2016-03-29 20:57:50 +02:00
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```blocks
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basic.pause(1000)
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```
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2016-03-26 00:47:20 +01:00
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## 3. Write the code that leaves an image on the screen for 1.5 seconds (1500 milliseconds)
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2016-03-29 20:57:50 +02:00
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```blocks
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basic.pause(1500)
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```
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2016-03-26 00:47:20 +01:00
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