Sequencing and Repetition in Computing for Year 2: Interactive Quizzes

Question 1

What is a sequence used for in Python?

Accepted Answer

Storing ordered items

Answer

Storing unordered items

Answer

Storing a single value

Answer

Storing a True/False value

Question 2

What will this Python code print: 'for i in range(5): print(i)'?

Accepted Answer

0 1 2 3 4

Answer

1 2 3 4 5

Answer

0 2 4

Answer

1 3 5

Question 3

What is the purpose of a loop in computing?

Accepted Answer

To run a set of instructions multiple times

Answer

To store data

Answer

To make decisions

Answer

To perform calculations

Question 4

What is the difference between a sequence and a loop?

Accepted Answer

A sequence runs instructions in order, while a loop repeats instructions.

Answer

A loop runs instructions in order, while a sequence repeats instructions.

Answer

A sequence and a loop do the same thing.

Answer

There is no difference between a sequence and a loop.

Question 5

Which of these is NOT a way to repeat code in an algorithm?

Accepted Answer

Using an if statement

Answer

Using a for loop

Answer

Using a while loop

Answer

Using a do-while loop

Question 6

How can we make an algorithm more efficient by using sequencing and repetition?

Accepted Answer

Optimize the order of steps and reduce the number of repetitions.

Answer

Only use one loop in the algorithm.

Answer

Avoid using any sequencing or repetition.

Question 7

Arrange the following numbers in increasing order: 3, 5, 2, 7, 1

Accepted Answer

1, 2, 3, 5, 7

Answer

1, 2, 3, 7, 5

Answer

2, 1, 3, 7, 5

Answer

7, 5, 3, 2, 1

Question 8

What is the main purpose of using repetition in a program?

Accepted Answer

To repeat the same task multiple times.

Answer

To skip over certain steps.

Answer

To stop the program.

Answer

To make the program more efficient.

Question 9

What's the key difference between a sequence and a repetition?

Accepted Answer

A sequence is a set of instructions that run one after the other, while a repetition repeats the same instructions multiple times.

Answer

A sequence is a set of instructions that run in a random order, while a repetition runs in a specific order.

Answer

A sequence is a set of instructions that are stored in a variable, while a repetition is stored in a loop.

Answer

There is no difference between a sequence and a repetition.

Question 10

Which of these examples shows a sequence of steps?

Accepted Answer

Following the rules of a game

Answer

Drawing a freehand picture

Answer

Singing a song without any particular order

Answer

Having a conversation that jumps from topic to topic

Question 11

What does the star (*) symbol mean in algorithms?

Accepted Answer

Repeating

Answer

Adding

Answer

Subtracting

Answer

Dividing

Question 12

How many times will this code repeat the message 'Hello': repeat 5 times print 'Hello'

Accepted Answer

Five times

Answer

Once

Answer

Ten times

Answer

Forever

Question 13

Which of these is NOT a good thing about using sequences and repeating certain steps in algorithms?

Accepted Answer

It makes it harder for people to understand our algorithms

Answer

It helps us do things automatically

Answer

It helps us solve problems faster

Answer

It reduces mistakes

Question 14

Why do we use loops in algorithms?

Accepted Answer

To do something multiple times

Answer

To skip specific steps

Answer

To stop the algorithm

Answer

To change the data

Question 15

What's the correct order to write instructions?

Accepted Answer

In a way that makes sense and follows a logical order

Answer

In whatever order you want

Answer

In the opposite order of how you'll do them

Answer

In a random and unpredictable order

Question 16

How do repeated steps make algorithms more efficient?

Accepted Answer

They reduce the total number of steps needed

Answer

They make sure you don't need to ask the user for input

Answer

They always give more accurate results

Answer

They make the algorithm run faster

Question 17

In the real world, which of these activities involves both sequencing and repetition?

Accepted Answer

Baking a cake

Answer

Playing a video game

Answer

Drawing a picture

Question 18

What is a step-by-step plan that computers use to solve problems called?

Accepted Answer

Algorithm

Answer

Variable

Answer

Data

Answer

Function

Question 19

When a computer executes a sequence of instructions, it:

Accepted Answer

Follows the instructions in order.

Answer

Skips the instructions it doesn't understand.

Answer

Executes the instructions in random order.

Answer

Ignores the instructions altogether.

Question 20

Which of these is an example of a repetition in an algorithm?

Accepted Answer

Repeating a loop a certain number of times

Answer

Changing the value of a variable

Answer

Printing a message to the screen

Answer

Checking if a condition is true or false

Question 21

What is the reason for using a loop in an algorithm?

Accepted Answer

To repeat a set of instructions multiple times

Answer

To store data in memory

Answer

To compare two values

Answer

To make decisions

Question 22

Which of these is a correct Python code for a for loop?

Accepted Answer

for i in range(5):

Answer

for i = 0 to 4:

Answer

for (i = 0; i < 5; i++)

Answer

for i = range(5)

Question 23

What is a main reason we use algorithms?

Accepted Answer

To break down problems into smaller steps

Answer

To make programs run faster

Answer

To make programs do everything we want

Answer

To make programs more fun to use

Question 24

How do sequencing and repetition help us when creating algorithms?

Accepted Answer

They save us time and effort by repeating steps

Accepted Answer

They make our algorithms more efficient

Answer

They are not useful in algorithms

Question 25

Which of the following shows a sequence of numbers?

Accepted Answer

1, 2, 3, 4, 5

Answer

North, West, South, East

Answer

Blue, Red, Yellow, Green

Answer

Cat, Dog, Fish, Bird

Question 26

What is the missing number in the sequence: 2, 4, 6, ___, 10?

Accepted Answer

8

Answer

11

Answer

9

Answer

7

Question 27

Which of the following is an example of repeating the same action?

Accepted Answer

Looping through a list of items

Answer

Displaying a message on the screen

Answer

Comparing two numbers

Answer

Saving data in a variable

Question 28

What is the main purpose of using a 'for' loop?

Accepted Answer

To repeat a block of code multiple times

Answer

To compare two values

Answer

To store data in a variable

Answer

To display a message on the screen

Question 29

Which of the following correctly uses a 'for' loop to print the numbers from 1 to 5?

Accepted Answer

for i in range(1, 6):
  print(i)

Answer

for i = 1 to 5:
  print(i)

Answer

for i in 1 to 5:
  print(i)

Answer

for i = 1:5:
  print(i)

Question 30

Why is it useful to use sequencing and repetition in algorithms?

Accepted Answer

It can make algorithms more efficient and less complex.

Answer

It makes algorithms harder to debug.

Answer

It can make algorithms more predictable.

Answer

It can make algorithms less efficient.

Question 31

What is the key difference between a sequence and a repetition?

Accepted Answer

A sequence is a set of instructions that are executed one after the other, while a repetition is a set of instructions that are executed multiple times.

Answer

A sequence is a set of numbers, while a repetition is a set of letters.

Question 32

Which programming construct is used to create a sequence?

Accepted Answer

Sequence statement

Answer

Loop statement

Answer

Input statement

Answer

Branching statement

Question 33

Which of the following is a sequence of numbers?

Accepted Answer

1, 2, 3, 4, 5

Answer

Red, blue, green, yellow

Answer

Dog, cat, fish, bird

Answer

Monday, Tuesday, Wednesday

Question 34

What is the main purpose of using a loop in a computer program?

Accepted Answer

To repeat a set of instructions multiple times

Answer

To compare two values

Answer

To store data in memory

Question 35

What is the difference between a sequence and a loop?

Accepted Answer

A sequence is a set of instructions that are executed one after the other, while a loop is a set of instructions that are repeated multiple times.

Answer

A sequence is executed from top to bottom, while a loop is executed from bottom to top.

Question 36

Which of the following is an example of a task that can be automated using a loop?

Accepted Answer

Drawing a square

Answer

Writing a story

Answer

Solving a math problem

Question 37

What is the advantage of using loops in computer programs?

Accepted Answer

They can reduce the number of lines of code required to perform a task.

Answer

They slow down the execution of programs.

Answer

They make programs more difficult to understand.

Question 38

What is the disadvantage of using loops in computer programs?

Accepted Answer

They can be difficult to debug if they are not implemented correctly.

Answer

They always make programs more efficient.

Answer

They are not supported by all programming languages.

Question 39

Which of the following is a good practice when using loops in algorithms?

Accepted Answer

Always use a loop variable to keep track of the current iteration.

Answer

Always use a WHILE loop instead of a FOR loop.

Answer

Always use a fixed number of iterations for all loops.