Witty.ca - Graham's Professional Archives

Please answer ALL questions carefully.
If you get stuck on one bullet, move on to the next one. 
Each bullet is worth the same as the others!

19 minutes - Timed Quiz

1. Open a blank Scratch project ( File --> New )

2. In that Scratch project, create 4 objects.

With the blue car, do this:

one point each bullet (4 points total)

• If the green flag is clicked
• Forever
•        Move 18 steps
•        If touching the edge, bounce

With the airplane, do this:

one point each bullet (11 points total)

• In the Costumes tab, import another costume (e.g. helicopter) for this object
• If the green flag is clicked
• Go to (x,y)   - - Make sure the values are entered as (-150,0)
• Point in Direction   0   (Up)
• Forever
•        Move 5 steps
•        Turn 2 degrees    Clockwise  (the same direction as a clock's hands)
•        If       y position    >    0                     ( multiple colours needed to complete this line )
•                  Switch costume to Airplane
•        Else
•                  Switch costume to other costume  (e.g. helicopter)

With the dog (and other objects) do this:

With the elephant, do this:

two points each bullet (16 points total)

• Copy the script from #1 (the blue car above),     and make the following changes:
  
• Remove "If on edge, bounce"
  

• Create a variable called "Speed"
• When the green flag is clicked, set Speed to    -3
• How many steps should the elephant move?  Make that happen.
• Create a new "IF" 
•           That if should sense the touching of the edge
•                      If touching the edge, the Speed should change from negative to positive
                          (and next time from positive to negative, and next time....)