Python Tracy the Turtle (codehs) through Lesson 10

How will I tell Tracy to move forward 100 pixels?

• Forward(100)

• move(100)

• Tracy, move forward 100 pixels

• backward(-100)

When using the circle() command, what value do we put inside the parentheses?

• Radius of the circle

• Center of the circle

• Diameter of the circle

• Width of the circle

When Tracy is facing right, from what location does she start drawing the circle for the command circle(-30)?

• Top of the circle

• Bottom of the circle

• Left of the circle

• Middle of the circle

Where does Tracy always start in the grid world?

• (0, 0) coordinate in the bottom left hand corner of the canvas

• (-200, -200) coordinate in the bottom left hand corner of the canvas

• (0, 0) coordinate in the middle of the canvas

• (-200, -200) coordinate in the middle of the canvas

What are the dimensions of Tracy's world?

• 200 pixels x 200 pixels

• 400 pixels x 200 pixels

• 400 pixels x 400 pixels

• 200 pixels x 400 pixels

Which command causes Tracy to move from the starting position to reach the right side of the canvas?

• forward(-200)

• setposition(400,0)

• setposition(200,0)

• forward(400)

If you want Tracy to draw a circle, move forward 100 pixels without making a line, and draw another circle (where the edges of the circle touch) what set of commands should you write?

• circle(30)

  penup( )

  forward(60)

  pendown()

  circle(30)

• circle(30)

  forward(60)

  pendown()

  circle(30)

• circle(30)

  penup( )

  forward(30)

  pendown()

  circle(30)

• circle(30)

  forward(60)

  circle(30)

If Tracy started facing right, which direction would she be facing after we ran the following code:

left(-90)

left(-90)

right(90)

• up

• down

• right

• left

Which of the following is NOT a reason for loops are useful when writing code?

• Loops help use write the same program with fewer lines of code.

• Loops let us make shapes of multiple sizes

• Loops make it easier to alter code once it's written.

• Loops make our code easier to read

The following loop draws 3 circles on the screen.

for i in range(3):

circle(25)

forward

If I wanted to alter this loop to draw 10 circles, how many lines would my code be?

• 1 line

• 3 lines

• 10 lines

• 30 lines