PLTW CSE Quiz - Activities 1.1.1 thru 1.1.4

Sam wants to clean up the user interface on her app. Which view should she be working in on MIT App Inventor?

• Designer View

• Blocks View

Which Event Handler will update the Screen to show the picture taken on the Canvas?

• Camera 1

• Camera 2

• Camera 3

• Camera 4

A(n) float is:

• A precise number by including values after the decimal place
• A programming statement that directs control flow - it uses BOOLEAN expressions to make a choice between different paths (IF (condition) THEN (path1) ELSE (path2)
• A data type that can have only 2 values - TRUE or FALSE
• A whole number, it does not have any digits after a decimal.

A(n) event handler is:

• Operators that are used to combine or change Boolean Expressions. The 3 standard operators are AND, OR, and NOT.

• A symbol that represents a compare action for a computer to take. Examples are: ">" (greater than), "<" (less than) and "=" (equal)

• An expression that can be evaluted as TRUE or FALSE. Often used in CONDITIONAL STATEMENTS, such as IF (condition) THEN (action1) ELSE (action2)

• Control block that looks for events to then perform action

If the user clicks the Guess button, when will this code run?

• If the user enters a guess lower than the secret number.

• If the user enters a guess higher than the secret number.

• if the user enters the correct secret number.

If AngryBird.X = 50, AngryBird.Y = 50 and HappyPig.X = 30, HappyPig.Y = 30, what color will be chosen?

• Purple

• Green

• Orange

• Yellow

"message", "title", "button1Text" are all examples of:

• abstraction

• arguments

• booleans

• events

In the picture, the x in "Canvas1.Height x 0.1" is:

• a relational operator

• a logical operator

• an arithmetic operator

• a string

If "AngryBird.X > HappyPig.X" is TRUE and "AngryBird.Y > HappyPig.Y" is FALSE, what color will be chosen?

• Purple

• Green

• Orange

• Yellow

A(n) arithmetic operator is:

• Values that a program provides to a function or subroutine

• Type of code to perform a math operation, such as + - * /

• A set of steps to accomplish a task.

• Way to manage complexity, hide details or remove duplication