Before attempting this quiz you should:-

Know how to synchronise Scratch blocks on two sprites
Be taught how to find, create or import backgrounds
Be shown how to find, record or import sounds

This unit uses the following code blocks

Answer the following questions

Results

Self Review

Your next task is to make sure you really understand what is happening. Look at any you are not sure about and try to work out why. Perhaps discuss with a partner.

Go to Scratch

You will find all the code at https://scratch.mit.edu/projects/372336446/ Run a section of code by clicking on the top instruction. Investigate how it works, by explaining to your partner. Have a go at modifying the algorithm, changing the timing of all the sprites and adding sentences.

Make Task – In your own project which you are developing, add a change of scene and background sound Challenge – Perhaps you might change the background of the scene twice or add other sound effects.

Key Question

As you get more characters and events, controlling the timing becomes more important? How would you create a timeline to plan schene changes? Discuss this with a partner.

Ask an Adult

Ask an adult to help you look at any you are not sure about.

Try to work out why. Discussing and working with a partner should also help.

Go to Scratch

You will find all the code at https://scratch.mit.edu/projects/372336446/

Run a section of code by clicking on the top instruction.

Investigate how it works, by explaining to your partner.

Have a go at modifying the algorithm, changing the timing of all the sprites and adding sentences.

Make Task – In your own project which you are developing, add a change of scene and background sound

Challenge – Perhaps you might change the background of the scene twice or add other sound effects.

Key Question

As you get more characters and events, controlling the timing becomes more important?

How would you create a timeline to plan schene changes?

Discuss this with a partner.

#1. What do you think this script does?

Changes the background from Urban to Forest after 10 seconds

Nothing

After 10 seconds, changes the background from Forest to Urban

Keeps alternating between different backgrounds

#2. When the backdrop changes, which command is being carried out by the dog script?

say 'I have no idea'

Wait 2 secs

say 'We've made it to town'

say 'Of course I will!'

#3. If the backdrop changes after 10 seconds, what command will the cat be doing?

Wait 2 secs

say "Do you know where we are?" for 2 seconds

Wait 6 secs

say "Will you help me find my friends" for 2 seconds

#4. This project adds background sound to the scene. Why do you think the volume is set to 30%?

Because at 30 it is louder than 10.

If it is any other number it won't work.

So that it plays the sound for 30 seconds and then stops.

Because it is quieter than any main character.

Volume is how loud the sound is…

Volume percentage goes from 0% (silent) to 100% (full volume)

Volume can be set at any number – the higher the number, the louder the volume.

#5. There might be a problem with this code.

The first sound should start with a 'play sound until done' block too.

If the first sound is longer than 10 seconds, it will carry on during the next scene

The sound will play, stop, then wait 10 seconds before playing the next sound

‘Start sound’ will carry on through the code blocks whilst the sound is playing

‘Play sound until done’ will stop doing the code blocks until the sound has finished.

The two commands are correct, but the first sound will just keep playing.

Score and next steps