code.org Unit 3 Review

What will the "background-color" of the "bottomButton" be when the program is finished running?

• red

• orange

• blue

• green

The following program is run. Then the user clicks the "bottomButton" ONCE and then clicks the "topButton" ONCE. What will be displayed in the console?

• aaa bbb ccc

• aaa ccc bbb

• bbb aaa ccc

• ccc bbb aaa

The following program is run. Then the user clicks the "bottomButton" TWO TIMES. What will be displayed in the console?

• aaa bbb ccc ddd

• bbb ddd ccc ccc

• bbb ddd aaa aaa

• bbb ccc ccc ddd

Which of the following BEST describes the differences between sequential and event-driven programming?

• In sequential programming commands run one at a time. In event-driven programming all commands run at the same time

• In sequential programming commands run faster than in event-driven programming.

• In sequential programming each command is run many times in sequence. In event-driven programming all commands are run a single time as an event.

• In sequential programming commands run in the order they are written. In event-driven programming some commands run in response to user interactions or other events.

Which of the following is NOT a reason to include comments in programs

• Comments help the computer decide whether certain components of a program are important.

• Comments help programmers debug issues in their own code

• Comments help document how code was written for other programmers to use

• Comments enable programmers to track their work throughout the development process

Select the correct code.

• A

• B

• C

Which line of code produces the message?

• 1

• 2

• 3

Which line of code sets the font color?

• 1

• 2

• 3

Which line of code sets the text size?

• 1

• 2

• 3

Does the code match the app screenshot?

• Yes

• No