Suppose you write a function. How many times can you call the function in your code?

Not more than the number of commands the function holds

In which of the following situations would it be best to make a function?

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

You need Tracy to move forward by 100.

You need to change Tracy’s color.

You need Tracy to turn right and then turn left.

Suppose you want to make Tracy draw a mountain range, like the one shown above, starting from the left side. Which of the following functions would be the most useful function to write in order to solve this problem?

# Has Tracy draw a single triangle def make_triangle():

# Draws a square def my_function():

# Change's Tracy's color to red def change_to_red():

# Moves Tracy forward by 100 def move_100():

What will be the radii of the circles drawn from the following code? for i in range(10, 55, 10): circle(i)

10, 15, 20, 25, 30, 35, 40, 45, 50, 55

What will be the output of the following program? for i in range(3, 7, 2): circle(50, 360, i)

Two shapes- a triangle (3 sides) and a pentagon (5 sides).

Three circles with radii of 3, 7 and 2.

Three shapes- a triangle (3 sides), a pentagon (5 sides), and a heptagon (7 sides).

Three shapes- a triangle (3 sides), a heptagon (7 sides), and a line (2 sides).

Which of the statements below is true about indentation in Python?

Indentation always matters in Python. Every statement must be aligned correctly.

Indentation only matters in functions. Then, everything must be indented one level.

Indentation only matters in for loops. Then, everything must be indented one level.

Indentation never matters in Python. You can align your code any way you like, but indentation makes your code easier to read.

Can a user’s input control the size of a circle? If so, how?

Yes radius = int(input("Radius: ")) circle(radius)

Yes radius = input("Radius: ") circle(radius)

Which of the following functions is declared correctly?

def draw_edge(): forward(100) left(90)

def draw_edge() { forward(100) left(90) }

def draw_edge forward(100) left(90)

def draw_edge() forward(100) left(90)

Which of the following is NOT a purpose of using functions?

Functions let you execute code a fixed number of times.

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

Functions allow the programmer to reuse code.

Functions let Tracy do new things.

What is the difference between defining and calling a function?

Defining a function means you are teaching the computer a new word. Calling a function means you are commanding the computer to complete defined actions.

Defining a function must be done each time you want to use the function. Calling a function can only happen once in your code.

Calling a function means you are teaching the computer a new word. Defining a function means you are commanding the computer to complete defined actions.

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

How far Tracy is supposed to move

How many degrees Tracy is supposed to turn

How fast Tracy is supposed to move

How many times Tracy should repeat the command

If Tracy starts on the left edge of the canvas and moves forward 100 pixels, which loop is the correct code to have Tracy reach the right edge of the canvas?

for i in range(4): forward(100)

for i in range(8): forward(100)

for i in range(1): forward(100)

Why do certain words change color in Python?

To show that they are recognized as key words

To tell you that these words cannot be used in Python

To show you that these words can be clicked

To tell Python to skip these words when running the code

Computer Science Essentials Unit 1 Test

Authored by Christine Garnett

Computers

9th - 12th Grade

Used 9+ times

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35 questions

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MULTIPLE CHOICE QUESTION

5 mins • 1 pt

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

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

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

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which code would produce this output?

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

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?: “)

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

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: “)

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

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

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

How many parameters may be defined for a single function?

Any number

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Computer Science Essentials Unit 1 Test