Lesson3. Algorithms and Programing (P3)_Scratch

Referring to the script and scene below. The Scratch Cat should do a flip when the space key is pressed. But when the space key is pressed, nothing happens! How do we fix the program?

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• D. All of the above.
  

• E. None of the above.
  

What is the cat’s position after clicking the green flag?

• A. (0, 20)
  

• B. (90, 30)
  

• C. (20, 30)
  

• D. (90, 20)
  

• E. None of the above
  

Which of the following scripts gives the same final outcome as the above script and scene?

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Given the following scene. What is the cat’s position after clicking the green flag?

• A. (50, 50)
  

• B. (250, 0)
  

• C. (50, 0)
  

• D. (90, 50)
  

• E. None of the above
  

Given the cat is initially at (0,0), which of the following script will give the same outcome?

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• E. None of the above

  
  

Which of the following is the correct script so that three cats will appear in the stage as expected result? (You can assume that the green flag is clicked)

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• E. None of the above

  
  

Which of the following is the correct script so that the cat would show to say “Hello World” in 1 second and hide. After 1 second, the cat would say “Welcome to Scratch!” in 2 seconds. (You can assume that the green flag is clicked)

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• E. None of the above

  
  

Given the following scene. Why does the sprite cat not appear moving to random position after the green flag was clicked?

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• B. Not until the key space is pressed.
  

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• E. None of the above.
  

When the green flag is clicked, the sprite Cat should say "Meow, meow, meow!" in a speech bubble and as a sound. But the speech bubble happens before the sound -- and the Scratch Cat only makes one "Meow" sound. Why?

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• E. None of the above.
  

Compares two following solution scripts for problem in question 17. Who is/are correct?

• A. Student A is correct, Student B is incorrect.
  

• B. Student A is incorrect, Student B is correct.
  

• C. Both are correct.
  

• D. Both are not correct.
  

• E. None of the above