57 lines
1.4 KiB
Markdown
57 lines
1.4 KiB
Markdown
# glowing pendulum quiz answers
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construct a pendulum that glows using acceleration.
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## Name
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## Directions
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Use this activity document to guide your work in the [glowing pendulum activity](/lessons/glowing-pendulum/activity)
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Answer the questions while completing the tutorial. Pay attention to the dialogues!
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## 1. Why are you creating a 'forever' loop?
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<br/>
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We are creating a forever loop to constantly display the appropriate brightness on the LED display.
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## 2. Write the line of code to measure the acceleration with respect to the "y" axis and store this value in a local variable called 'acceleration'.
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<br/>
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```blocks
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let acceleration = input.acceleration("y")
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```
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## 3. After storing the acceleration in a variable, write the code to take the absolute value of the acceleration, and store this value inside 'acceleration'.
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<br/>
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```blocks
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let acceleration = input.acceleration(Dimension.X)
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let accelerationAbsolute = Math.abs(acceleration)
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```
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## 4. Write the code to use the acceleration value from question 3 to set the brightness on the BBC micro:bit.
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<br/>
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```blocks
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let accelerationX = input.acceleration(Dimension.X)
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let accelerationAbsolute = Math.abs(accelerationX)
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let accelerationDivided = accelerationX / 4
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led.setBrightness(accelerationX)
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```
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## 5. Write the code that tuns all the LEDs on (as the image displays below)
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<br/>
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```
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led.plotAll()
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```
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