COMP SCI TEST EXAM QUESTIONS AND ANSWERS
LATEST UPDATE
When using the circle() command, what value do we put inside the parentheses?
The radius of the circle
When Tracy is facing right, from what location does she start drawing her circle?
the bottom of the circle
Where does Tracy always start in the grid world?
At the (0,0) coordinate in the middle of the canvas
What are the dimensions of Tracy's world?
400 pixels x 400 pixels
Which commands would move Tracy forward 100 pixels?A. forward(100)B.
backward(-100)C. forward(-100)
A and B
How far does Tracy need to move from the starting position to reach the right
side of the canvas?
200 pixels
If you want Tracy to move forward 100 pixels without making a line, what set of
commands should you write
penup() forward(100)
Tracy always starts facing which direction?
East
If Tracy is facing right, which of the following commands can be used to turn her
to face up?A. left(90)B. turn(up)C. right(-90)D. setposition(90)
A and C
If Tracy started facing right, which direction would she be facing after we ran the
following code?
up
Which of the following is NOT a reason for loops are useful when writing code?
Loops let us make shapes of multiple sizes
The following loop draws 3 circles on the screen. If I wanted to alter this loop to
draw 10 circles, how many lines would my code be?
for i in range(3):
circle(25)
forward(50)
3 lines
If Tracy starts at the left edge of the canvas and moves forward 50 pixels, how
many times will this code need to be repeated to have Tracy reach the right edge
of the canvas?
8 times
Which lines of the code below will be repeated 4 times?
, penup()
for i in range(4):
pendown()
circle(25)
forward(50)
backward(200)
3, 4, and 5
Why do certain words change color in Python?
To show that they are recognized as key words
If I use the command right(180), which way will Tracy turn?
She will turn around
The setposition() command moves Tracy to a coordinate and:
does not turn her
If you wanted Tracy to complete her command immediately, which speed value
would you use?
0
If you want three circles to be drawn next to each other (as seen in the image
below), after drawing the first circle, how far would you need to move Tracy
before drawing the next circle?
The circle's diameter
Answered
Comments are:
Written for humans to read and understand
What symbol is used at the beginning of an in-line comment?
#
What punctuation is needed to begin a multi-line comment?
"""
Which of the names below follow all naming rules?
make_square
If I am creating a function that is going to draw 2 squares, which of the following
would be the best name option?
draw_squares
Which of the following is NOT a way functions make our code more readable?
Each function only contains one command
What two things must be included in your function definition?
A function name and commands to be performed
Which is the proper way to call the function three_circles?
three_circles()
How would I change Tracy's trail to a yellow line with a thickness of 10 pixels?
color("yellow") pensize(10)
What is true of Tracy's color command?
The color name must be in quotation marks
What is the correct way to draw a circle that is filled in?
begin_fill()
circle(20)
end_fill()
LATEST UPDATE
When using the circle() command, what value do we put inside the parentheses?
The radius of the circle
When Tracy is facing right, from what location does she start drawing her circle?
the bottom of the circle
Where does Tracy always start in the grid world?
At the (0,0) coordinate in the middle of the canvas
What are the dimensions of Tracy's world?
400 pixels x 400 pixels
Which commands would move Tracy forward 100 pixels?A. forward(100)B.
backward(-100)C. forward(-100)
A and B
How far does Tracy need to move from the starting position to reach the right
side of the canvas?
200 pixels
If you want Tracy to move forward 100 pixels without making a line, what set of
commands should you write
penup() forward(100)
Tracy always starts facing which direction?
East
If Tracy is facing right, which of the following commands can be used to turn her
to face up?A. left(90)B. turn(up)C. right(-90)D. setposition(90)
A and C
If Tracy started facing right, which direction would she be facing after we ran the
following code?
up
Which of the following is NOT a reason for loops are useful when writing code?
Loops let us make shapes of multiple sizes
The following loop draws 3 circles on the screen. If I wanted to alter this loop to
draw 10 circles, how many lines would my code be?
for i in range(3):
circle(25)
forward(50)
3 lines
If Tracy starts at the left edge of the canvas and moves forward 50 pixels, how
many times will this code need to be repeated to have Tracy reach the right edge
of the canvas?
8 times
Which lines of the code below will be repeated 4 times?
, penup()
for i in range(4):
pendown()
circle(25)
forward(50)
backward(200)
3, 4, and 5
Why do certain words change color in Python?
To show that they are recognized as key words
If I use the command right(180), which way will Tracy turn?
She will turn around
The setposition() command moves Tracy to a coordinate and:
does not turn her
If you wanted Tracy to complete her command immediately, which speed value
would you use?
0
If you want three circles to be drawn next to each other (as seen in the image
below), after drawing the first circle, how far would you need to move Tracy
before drawing the next circle?
The circle's diameter
Answered
Comments are:
Written for humans to read and understand
What symbol is used at the beginning of an in-line comment?
#
What punctuation is needed to begin a multi-line comment?
"""
Which of the names below follow all naming rules?
make_square
If I am creating a function that is going to draw 2 squares, which of the following
would be the best name option?
draw_squares
Which of the following is NOT a way functions make our code more readable?
Each function only contains one command
What two things must be included in your function definition?
A function name and commands to be performed
Which is the proper way to call the function three_circles?
three_circles()
How would I change Tracy's trail to a yellow line with a thickness of 10 pixels?
color("yellow") pensize(10)
What is true of Tracy's color command?
The color name must be in quotation marks
What is the correct way to draw a circle that is filled in?
begin_fill()
circle(20)
end_fill()
