Yr 10 Term 1

​Computer Science

Yr 10 - Term 1​

​

Algorithms ​

Multiple Choice

________ is a series of instructions that are followed to complete a task or solve a problem.

• instructions

• algorithms

• computers

• recipe

Multiple Choice

Algorithms exist all around us.

• True

• False

Multiple Choice

____________ can be considered an example of an algorithm

• answer to a question

• name of a person

• favorite subjects

• a recipe for making pancake

Multiple Choice

An algorithm should be in the right order.

• True

• False

Multiple Choice

What is the correct definition of an algorithm?

• An algorithm is a step by step instructions to solve a problem.
• An algorithm is a process of baking bread.
• An algorithm is a software used to compute numbers.
• An algorithm is the process of breaking problems.

Multiple Choice

Which of these would not be involved in decomposing a problem?

• Thinking about how the problem could be divided into smaller parts
• Working out who could help you solve a part of the problem
• Adding more parts to the problem so it becomes more complaex

Multiple Choice

What is decomposition?

• Adding detail to make a problem more complex

• Breaking down a complex problem or system into smaller, more manageable parts

• When you ignore the unnecessary detail in a problem

Multiple Choice

What does this shape represent?

• Decission
• Process
• Input/Output
• Start/End

Multiple Choice

What is used to connect the flowchart symbols together?

• Rectangles
• Lines
• Arrows
• Patterns

Multiple Choice

What is the purpose of a diamond in a flowchart?

• Process
• Input / Output
• Sub-process
• Decision

Multiple Choice

Which of the following is the definition of pseudocode?

• A container which is used to store values such as the number of attempts a person tries to log on to a network.
• A language that is similar to a real programming language, but is easier for humans to understand although it doesn’t actually run on a computer. It can easily be converted to a regular programming language.
• A value that cannot be altered by the program during normal execution: the value stays the same. 
• Messages to explain to others, and often to remind yourself, what the code is intended to do. 

Multiple Choice

Which of the following is the definition of a variable?

• A container which is used to store values such as the number of attempts a person tries to log on to a network.
• A language that is similar to a real programming language, but is easier for humans to understand although it doesn’t actually run on a computer. It can easily be converted to a regular programming language.
• A value that cannot be altered by the program during normal execution: the value stays the same. 
• Messages to explain to others, and often to remind yourself, what the code is intended to do. 

Multiple Choice

Which of the following is the definition of a constant?

• A container which is used to store values such as the number of attempts a person tries to log on to a network.
• A language that is similar to a real programming language, but is easier for humans to understand although it doesn’t actually run on a computer. It can easily be converted to a regular programming language.
• A value that cannot be altered by the program during normal execution: the value stays the same. 
• Messages to explain to others, and often to remind yourself, what the code is intended to do. 

Multiple Choice

An identifier is the ‘name’ given to a variable. For example: 
distanceToSchool = 10
Which part is the identifier?

• 10
• =
• distanceToSchool

Multiple Choice

An identifier is the ‘name’ given to a variable. For example: 
distanceToSchool = 10
What is the value of the variable?

• 10
• =
• distanceToSchool

Multiple Choice

Which is the correct way to get the user to enter a value when written as pseudocode?

• input (“Please enter the length”)
• length == input ("Please enter the length")
• length = (“Please enter the length”)
• length = input (“Please enter the length”)

Multiple Choice

Which flowchart element is this?

• A. Decision Box

• B. Flow line

• C. On-Page connector

• D. Processing

Multiple Choice

Which flowchart element is this?

• A. Processing

• B. Flow/arrow line

• C. On-page connector

• D. Decision making

Multiple Choice

Which flowchart element is this?

• A. Start/Stop

• B. Processing

• C. On-page connector

• D. Decision

Multiple Choice

What is the Output if the user enters:
Yes

• Leave umbrella at home
• Take an umbrella

Multiple Choice

What is the Output if the temperature is:
19

• Below Freezing
• Above Freezing

Multiple Choice

Which of the following assignment statements is assigning a number .

• myAge = 21
• myAge = "21"

Multiple Choice

Which of the following assignment statements is assigning text.

• myName = "David"
• myAge = 21

Multiple Choice

What is the process of converting one data type to another called?

• Data conversion.

• Type Casting.

• Type Conversion.

• Concatenation.

Multiple Choice

What function converts the data in a variable into a 'integer'?

• int()

• str()

• bool()

• float()

Multiple Choice

What function converts the data in a variable into a 'string'?

• str()

• float()

• bool()

• string()

Multiple Choice

How do you ask for the user to input their name?

• name = int("what is your name")

• print("What is your name?")

• input = name("what is your name?")

• name = input("what is your name?")

Multiple Choice

By default any data inputted by the user is of data type string in python.

• True

• False

Multiple Choice

What will be the output of the following command?

x = int(3.6)

print(x)

• 3

• 4

• Logical error - Can't cast a float value to an integer as data will be lost.

Multiple Choice

What will be the output of the following command?

x = float(3)

print(x)

• Logical error - Can't cast a integer value to an float as data will be added.

• 3.0

• 3

Multiple Choice

What will be the output of the following program, if the user entered 20 and then 41?

Number1 = input("Enter the first number: ")

Number2 = input("Enter the second number: ")

print(Number1 + Number2)

• 20 41

• Syntax error.

• 61

• 2041

Multiple Choice

What can you add to the following code so that python recognises that they are numbers?

Number1 = input("Enter the first number: ")

Number2 = input("Enter the second number: ")

print(Number1 + Number2)

• int()

• float()

• Use a print statement to tell the user to enter a number.

• integer()

Multiple Choice

Syntax errors are caused by incorrectly typed source code.

• True
• False

Multiple Choice

A program won't run if there is a logic error.

• False
• True

Multiple Choice

Which statement best describes logic errors?

• An error in a program that causes it to produce incorrect ouputs but not a crash.
• An error in a program that causes it to crash.
• An error in the program caused by mis-spelt instructions.
• An error in a program caused by hardware failure.

Multiple Choice

Is this a logical or syntax error?

• Logical error

• Syntax error

Multiple Choice

Is this a logical or syntax error?

• Logical error

• Syntax error

Multiple Choice

Is this a logical or syntax error?

• Logical error

• Syntax error

Multiple Choice

Is this a logical or syntax error?

• Logical error

• Syntax error