Programming 101

1. When does a 'Forever' block stop executing?

• 10 seconds after it starts
• When the blocks inside it finish executing once
• When any sounds start playing
• When the program stops running

2. True or False: You can't use {"func":"registerSpriteTrigger"} in the Stage's code because the Stage isn't an Actor.

• True
• False

3. Katie is creating an automatic slideshow that will go through a bunch of the Stage's backgrounds. She adds the code shown below. Which block should she add before the 'Wait' block?
{"func":"registerFlagTrigger", "next": {"func":"blockControlForever","containers":[{"func":"blockControlWait","values":[{"type":"number","value":"3"}]}]}}

• {"func":"blockLooksNextBackground"}
• {"func":"blockLooksNextCostume"}
• {"func":"blockLooksSwitchCostume","values":[{"type":"string","value":""}]}
• {"func":"blockLooksSwitchBackground","values":[{"type":"string","value":""}]}

4. Which of the following blocks is an event block that could activate code for a slideshow?

• {"func":"blockLooksSay","values":[{"type":"string","value":""}]}
• {"func":"registerSpriteTrigger"}
• {"func":"blockLooksNextCostume"}
• {"func":"blockMotionMove","values":[{"type":"number","value":""}]}

5. Robert wants to make a slideshow that switches backgrounds when the user presses the spacebar. Which event block does he need?

• {"func":"registerSpriteTrigger"}
• {"func":"blockControlForever","containers":[null]}
• {"func":"blockSoundPlay","values":[{"type":"string","value":""}]}
• {"func":"registerKeyTrigger","values":[{"type":"choice","value":"space"}]}

6. True or False: It is possible to make a slideshow without any event blocks.

• True
• False

7. Sarah wants to make a slideshow that she can control by pressing the right arrow to go to the next slide and the left arrow to go to the previous slide. Which of the following blocks should she put under the {"func":"registerKeyTrigger","values":[{"type":"choice","value":"right arrow"}]} block?

• {"func":"blockLooksNextBackground"}
• {"func":"blockLooksNextCostume"}
• {"func":"blockLooksSwitchBackground","values":[{"type":"string","value":""}]}
• None of these

8. How can you make a slideshow of pictures?

• Just add multiple backgrounds to the Stage and add code switch through them
• Just add multiple Actors and add code to make them dance
• Just add some sounds and add code to play the sounds
• Use the {"func":"blockLooksChangeEffect","values":[{"type":"choice","value":"color"},{"type":"number","value":"25"}]} block

9. What is the difference between the {"func":"blockLooksNextBackground"} block and {"func":"blockLooksNextCostume"} block?

• The {"func":"blockLooksNextBackground"} block is for the Stage but the {"func":"blockLooksNextCostume"} block is for Actors
• They are exactly the same
• The {"func":"blockLooksNextBackground"} block changes Costumes in order while the {"func":"blockLooksNextCostume"} block picks a random Costume to switch to
• The {"func":"blockLooksNextBackground"} block changes the background while the {"func":"blockLooksNextCostume"} block makes Actors move

10. To add music to your slideshow, which block should you use?

• {"func":"blockSoundPlay","values":[{"type":"string","value":""}]}
• {"func":"blockLooksNextCostume"}
• {"func":"blockLooksNextBackground"}
• {"func":"blockMotionMove","values":[{"type":"number","value":"10"}]}

11. Which of the following code blocks would you use to make a slideshow that switches pictures when you click on the Stage?

• {"func":"registerSpriteTrigger","next":{"func":"blockLooksNextBackground"}}
• {"func":"registerFlagTrigger","next":{"func":"blockLooksNextBackgroundInGroup","values":[{"type":"string","value":"next"}]}}
• {"func":"registerSpriteTrigger","next":{"func":"blockMotionMove","values":[{"type":"number","value":"10"}]}}
• {"func":"registerFlagTrigger","next":{"func":"blockSoundPlay","values":[{"type":"string","value":""}]}}

12. Which of the following code blocks would you use to make a slideshow that switches pictures when you tap on the Stage?

• {"func":"registerSpriteTrigger","next":{"func":"blockLooksNextBackground"}}
• {"func":"registerFlagTrigger","next":{"func":"blockLooksNextBackgroundInGroup","values":[{"type":"string","value":"next"}]}}
• {"func":"registerSpriteTrigger","next":{"func":"blockMotionMove","values":[{"type":"number","value":"10"}]}}
• {"func":"registerFlagTrigger","next":{"func":"blockSoundPlay","values":[{"type":"string","value":""}]}}