pxt-calliope/olddocs/lessons/charting/quiz-answers.md
Tom Ball f4eca66648 move lessons out of web site
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2016-06-14 11:49:58 -04:00

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# charting quiz answers
Measure the acceleration on the micro:bit in the "x" direction.
## Name
## Directions
Use this activity document to guide your work in the [glowing pendulum activity](/lessons/charting/acceleration)
Answer the questions while completing the tutorial. Pay attention to the dialogues!
## 1. Why are you creating a 'forever' loop?
<br/>
We are creating a forever loop to constantly display the appropriate brightness on the LED display.
## 2. Write the line of code to measure the acceleration with respect to the "x" axis and display this value in a bar graph.
<br/>
```blocks
led.plotBarGraph(input.acceleration(Dimension.X), 0)
```
## 3. After vigarously moving the micro:bit from side to side along the "x" axis for a sufficient amount of time,insert the Excel graph for displaying a line chart used to display trends over time.
<br/>
![](/static/mb/line_chart.png)