Tracy Unit 2 Final Test Study

Effect of backward(30)?

• Moves Tracy backward by 30 units.

• Moves Tracy forward by 30 units.

• Moves Tracy to the right by 30 units.

• Moves Tracy to the left by 30 units.

In which situation would it be best to make a function?

• You want Tracy to draw a blue line, and your program requires lots of blue lines in different places.

• You need to calculate the sum of two numbers only once.

• You want to display a message to the user just once.

• You are writing a program that only runs a single loop.

What does the number in the parentheses in a forward or backward command represent?

• How far Tracy is supposed to move

• The speed at which Tracy should move

• The direction Tracy should face

• The duration of the command

What are the purposes of functions?

• Functions allow programmers to use more descriptive names in programs.

• Functions help group statements together to make code more readable.

• Functions allow programmers to reuse code

• Functions are used to create variables in a program.

Purpose of the `forward(100)` command in the drawing functions?

• It moves the pen forward by 100 units to position for the next drawing.

• It rotates the pen 100 degrees to the right.

• It moves the pen backward by 100 units to erase the previous drawing.

• It changes the pen color to red for the next drawing.

Function def change_to_red() does what?

• Changes Tracy's color to red.

• Changes the background color to blue.

• Changes the text color to green.

• Changes the font size to large.

For loops

• By default, the range function starts at 0

• For loops can only iterate over lists

• For loops are used to create infinite loops

• For loops can only be used in Python

Result of executing forward(30) three times in a loop?

• Tracy moves forward 60 units in total.

• Tracy moves forward 90 units in total.

• Tracy moves forward 120 units in total.

• Tracy moves forward 150 units in total.

What does `circle(50, 360, i)` do in the program?

• It draws a circle with a radius of 50 and a number of sides determined by `i`.

• It creates a square with a side length of 50.

• It draws a circle with a fixed number of 360 sides.

• It generates a triangle with a radius of 50.

What does the `circle(50)` command do in the drawing functions?

• It draws a square with a side length of 50 units.

• It draws a circle with a radius of 50 units.

• It draws a triangle with a base of 50 units.

• It draws a rectangle with a width of 50 units.