PLTW APP Creators Summative Exam

Front

An app in App Inventor should display the name of every 5th student in a class of 20 starting with the 5th student. What should the from, to, and by parameters be?

Back

Front

Which of the following best describes the role of the Navigator in pair programming? Options: Controls the keyboard, Helps point out coding errors to the Driver, Controls the mouse, Dictates the code to the Driver

Back

Helps point out coding errors to the Driver

Front

When creating a program, how does the use of comments help debug problems later?

Back

Comments describe the purpose and desired outcome of the code.

Front

Which of the following components can be used to trigger an event handler when the device is shaken? Location sensor, Accelerometer sensor, Clock, Spinner

Back

Accelerometer sensor

Front

Which of the following computational items is used to temporarily store values in a program? Options: Variables, Procedures, Data bases, For Loops

Back

Variables

Front

Which of the following computational items can be used to reduce the redundancy of code the most and make the program shortest?
Variable,
Event handler,
Data base,
For Loop

Back

For Loop

Front

To add a button to a screen in App Inventor, where would the Button component be dragged to?

Back

Designer view

Front

To program a Button component in App Inventor, where would the code be added? Options: Designer View, Blocks Viewer, Properties pane, Media Drawer

Back

Blocks Viewer

Front

Which algorithms move the arrow from the Start block through the grey outlined path to the End block? Options: moveForward - 4 blocks, turnRight, moveForward - 6 blocks, turnLeft, moveForward - 6 blocks, moveForward - 2 blocks, turnRight, moveForward - 2 blocks, turnLeft, moveForward - 3 blocks, turnRight, moveForward – 4 blocks, turnLeft, moveForward – 2 blocks, moveForward - 2 blocks, turnRight, moveForward – 2 blocks, turnLeft, moveForward – 2 blocks, turnRight, moveForward – 4 blocks, turnLeft, moveForward – 4 block, moveForward - 2 blocks, turnRight, moveForward – 2 blocks, turnLeft, moveForward – 6 blocks, turnRight, moveForward – 2 blocks, turnLeft, moveForward – 4 blocks.

Back

moveForward - 2 blocks
turnRight
moveForward – 2 blocks
turnLeft
moveForward – 2 blocks
turnRight
moveForward – 4 blocks
turnLeft
moveForward – 4 block

Front

Which event handler will play an audio file when a check box is clicked in App Inventor?

Back