YEAR 5 QUIZ 1

What is an algorithm?

• A computer program
• A step-by-step procedure to solve a problem
• A random set of instructions
• A list of tasks

Answer explanation

An algorithm is a step-by-step procedure to solve a problem.

Why do engineers use flowcharts?

• To create random processes
• To add complexity to the process
• To visualize the process and make it easier to understand
• To ignore errors in tasks

Answer explanation

Engineers use flowcharts to map out processes, making them easier to understand.

Which flowchart symbol represents a decision?

• Oval
• Rectangle
• Diamond
• Parallelogram

Answer explanation

A diamond shape is used to represent decision points in a flowchart.

What is the purpose of a 'Process' symbol in a flowchart?

• To represent data input
• To perform an operation
• To ask a question
• To end the flowchart

Answer explanation

The 'Process' symbol represents an action or task to be performed in the flowchart.

What does the "Start" symbol in a flowchart represent?

• Marks the beginning of the process
• Represents a process
• A decision point
• Represents the end of the process

Answer explanation

The "Start" symbol marks the beginning of a flowchart process.

How can flowcharts help predict outcomes?

• By showing the sequence of steps visually
• By generating random numbers
• By guessing the next step
• By ignoring all conditions

Answer explanation

Flowcharts allow us to see all steps in a process and predict the outcomes based on conditions.

What is a sub-routine in programming?

• A variable used to store data
• A set of instructions that can be used multiple times
• A random set of instructions
• A method that can be used only once

Answer explanation

A sub-routine is a reusable block of code that can simplify programming by avoiding repetition.

Which of the following is an example of a variable in programming?

• A decision-making process
• A data container that stores values
• A constant value
• A program’s output

Answer explanation

A variable is a container that holds data, which can change during program execution.

How does iteration work in programming?

• By repeating a set of instructions
• By choosing between different actions
• By storing data
• By ending the program

Answer explanation

Iteration repeats a set of instructions in a program, such as in loops or repeated tasks.

What is the primary purpose of a "Decision" symbol in a flowchart?

• To represent data input
• To perform an operation
• To ask a question or make a choice
• To start the process

Answer explanation

The "Decision" symbol is used to represent a point where a choice or condition is made in the flowchart.