pxt-calliope/docs/reference/js/lessons/prank-wifi/quiz-answers.md

93 lines
1.8 KiB
Markdown
Raw Normal View History

2016-03-26 00:47:20 +01:00
# prank wifi quiz answers
create a fake wifi app to trick your friends #string #forever #abs #var #plot #image #if #math #abs #acceleration #docs
## Name
## Directions
Use this activity document to guide your work in the [prank WiFi tutorial](/microbit/lessons/prank-wifi/tutorial)
Answer the questions while completing the tutorial. Pay attention to the dialogues!
## 1. Write the lines of code that takes the absolute value of the accelerations with respect to the x, y and z axis and stores the values as Local Variables
<br/>
```
let xAccel = math.abs(input.acceleration("x"))
let yAccel = math.abs(input.acceleration("y"))
let zAccel = math.abs(input.acceleration("z"))
```
<br/>
## 2. Write the lines of code that add all the accelerations together to get the total acceleration and stores the value as a Local Variable called "sum"
<br/>
<br/>
```
let sum = xAccel + yAccel + zAccel
```
<br/>
## 3. Write the 'If statement' used if the sum of the acceleration value is less than 1400 milli-gravitys. Then write the code that will plot an image of the fake amount of WiFi if the acceleration in this 'If statement'
<br/>
```
if (sum < 1400) {
basic.plotImage(`
. . . . .
. . . . .
. . # . .
. # # . .
# # # . .
`)
}
```
<br/>
## 4. Write tje 'If statement' used if the sum of the acceleration value is greater than 1400 milli-gravitys but less than 1680 milli-gravitys. Then write the code that will plot an image of the fake amount of WiFi inside this 'If statement'
<br/>
<br/>
```
if (sum >= 1400 && sum < 1680) {
basic.plotImage(`
. . . . .
. . . # .
. . # # .
. # # # .
# # # # .
`)
}
```
## 5. Write the 'if statement' needed to display this specific plot image on the device
![](/static/mb/lessons/prank-wifi-0.png)
<br/>
<br/>
```
if (sum >= 1680) {
basic.plotImage(`
. . . . .
. . . . .
. . . . .
. . . . .
# . . . .
`)
}
```