Intro to CS in Python Module 2--Turtle Graphics

What does turn(90) do?

• Turns right 90 degrees
• Turns left 90 degrees
• Moves forward 90
• Does nothing as 'turn' is not a turtle instruction

What does forward(300) do?

• Moves in the direction it is facing 300 steps
• Moves down the screen 300 steps
• Moves up the screen 300 steps

Look at this code, what shape will it make?

• Square
• Triangle
• Rectangle
• Hexagon 

To stop the turtle drawing you need to use which of the following commands?

• penup:
• pen_up( )
• penup( )
• penup( ):

Which code will have Tracy move forward 10, then turn left and move forward 20?

• distance = 10

  forward(distance)

  left(90)

  distance = distance * 2

  forward(distance)

• distance = 10

  forward(distance)

  left(90)

  forward(distance)

• distance = 10

  distance = distance * 2

  forward(distance)

  left(90)

  forward(distance)

• distance = 10

  forward(distance)

  left(90)

  forward(distance)

  distance = distance * 2

Variables allow you to do what?

• Name different steps within code

• Use a convenient name to store information in code

• Name functions

• Use English words to control the computer

Which code would produce this output?

• 
• 
• 
• 

What statement would collect a number from the user to be the radius of a circle?

• int(input(“What is the radius?: “))

• radius = int(“What is the radius?: “)

• radius = int(input(“What is the radius?: “))

• radius = int input(“What is the radius?: “)

What is the correct way to ask a user for a color and store the answer as a variable?

• color = input(“Give a color: “)

• user_color = “Give a color: ”

• input(“Give a color: “)

• user_color = input(“Give a color: “)

Why are parameters useful?

• They allow you to use the same function code for many different sets of input values

• They allow a function to execute more quickly

• They give the ability to create while loops

• They let users execute the function without any input