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WorksheetsUnit 3: Switching Scene Introduction
Total questions: 20
Worksheet time: 10mins
In Scratch, what is a backdrop used for in a project?
It is the code for a sprite
It is the movement of sprites
It is the background of the stage
It is the sound for the game
What happens if you place two 'switch backdrop to' blocks one after another with no wait?
Only the second backdrop shows
Both backdrops fade slowly
The screen becomes blank
The sprite disappears
Which block should you use to pause so the audience sees the backdrop before switching again?
glide [seconds]
stop all blocks
repeat [times]
wait [seconds]
In a story with morning and night scenes, what is a simple way to change from day to night?
Switch backdrop from Day to Night
Change sprite costume to Night
Delete the Day sprite first
Increase the project volume
What is the main difference between a backdrop and a sprite in Scratch?
Backdrop moves with arrow keys, sprite never moves
Backdrop stores variables, sprite stores projects
Backdrop controls sounds, sprite controls keyboard
Backdrop is the stage background, sprite is a character
You want one script to try different backdrops during an animation. What should you add between changes?
A wait block between changes
A forever stop all block
A hide block for sprites
A louder sounds block
Which block lets you react when the backdrop becomes a certain scene?
when backdrop switches to [name]
when loudness greater than [value]
when timer resets to [zero]
when sprite touches [edge]
A project starts in a city scene, then moves to a forest. Which plan is best?
Set backdrop to Forest, then delete City
Set backdrop to City, wait, switch to Forest
Change sprite size, then stop all
Hide all sprites, then play a sound
Why might you use different backdrops in the same script?
To control the computer’s volume
To show scene changes in a story
To make the code compile faster
To delete unused costumes automatically
When should you use 'next backdrop' instead of 'switch backdrop to [name]'?
When setting one exact backdrop
When cycling through a backdrop list
When changing a sprite costume
When stopping the whole project
A classmate puts the wait block before the first switch backdrop. What will you most likely see at the start?
The project stops immediately
The current backdrop stays for a moment
The sprites hide automatically
The backdrop switches instantly twice
In Scratch, which category contains the blocks used to change the stage’s backdrop?
Operators category with green blocks
Looks category in the blocks list
Events category at the top
Motion category on the left
What does the block named switch backdrop to do when you choose a name from its drop-down list?
It changes to a random backdrop
It switches to the selected backdrop
It hides all current backdrops
It renames the selected backdrop
Where do the backdrop names shown in the switch backdrop to drop-down come from?
They are all sounds in the project
They are all online templates
They are all backdrops in the project
They are all costumes of sprites
You want to jump directly to a backdrop called CityNight. Which block should you use?
Use change costume to CityNight
Use next backdrop repeatedly
Use set size to CityNight
Use switch backdrop to CityNight
A project has three backdrops: A, B, and C (in that order). You are on B and click sopia: next backdrop once. Which backdrop will show?
A random backdrop appears
Backdrop A on the stage
Backdrop B on the stage
Backdrop C on the stage
A project lists five backdrops in the order: Park, Beach, Cave, Space, Farm. You need to show Cave after Beach using the fewest blocks. What is the best approach?
Use switch costume to Cave
Use switch backdrop to Cave
Use next backdrop twice from Beach
Use next backdrop once from Beach
If switch backdrop to shows only two options in its drop-down, what is the most likely reason?
The Events blocks are disabled now
The sprite has only two costumes loaded
The internet connection is slow today
Only two backdrops exist in the project
You are planning a race animation: start in 'Desert', then 'Grassy Field', then 'City'. Which script best achieves this plan?
next costume three times in a row
hide sprite; show sprite; clear effects
random backdrop; previous backdrop; go to front
switch backdrop to Desert; then Grassy Field; then City
Which sequence best matches the blocks in the solution image for the Sun?
forever → if touching Sun then Desert
when green flag clicked → change costume to Sun
when this sprite clicked → switch backdrop to Desert
when backdrop switches → set backdrop to Sun
