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App Lab Quiz (Introduction)

Authored by imam ibrahim

Information Technology (IT)

7th Grade

Used 1+ times

App Lab Quiz (Introduction)
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is App Lab used for?

Writing long essays

Building apps

Watching videos

Answer explanation

App Lab is a platform to build and share apps.

2.

MULTIPLE SELECT QUESTION

45 sec • 3 pts

Which of the following can you add in App Lab? (Choose all that apply)

Buttons

Images

Sound

Music streaming

Answer explanation

App Lab lets you use elements like buttons, images, and sound, but not streaming services.

3.

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

What block is used to change an element's color, size, or text?

playSound()

setProperty()

onEvent()

Answer explanation

setProperty() lets you modify an element’s properties like color and text.
Points: 1

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which property is needed to change the picture on the screen?

"background"

"image"

"sound"

Answer explanation

You use the "image" property in setProperty() to show images

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What do you need to create interaction (like clicking a button)?

Use the setProperty() block

Use the onEvent() block

Use repeat() block

Answer explanation

onEvent() detects user actions like clicks.

6.

MULTIPLE CHOICE QUESTION

45 sec • 2 pts

Which line correctly sets the background color to "red"?

setProperty("screen1", "background-color", red)

setProperty("screen1", "background-color", "red")

setProperty("screen1", background-color, "red")

Answer explanation

The color value needs to be in double quotes: "red"

7.

MULTIPLE CHOICE QUESTION

45 sec • 2 pts

Why is using good IDs important?

To make the app run faster

To find and control elements easily

To reduce memory usage

Answer explanation

Good IDs help identify elements quickly in your code.

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