Quiz on Computational Thinking

What does "Decomposition" mean in computational thinking?

• Breaking down a problem into smaller, manageable parts

• Removing unnecessary details from a problem

• Writing step-by-step instructions to solve a problem

• Combining smaller problems into one big problem

Answer explanation

In computational thinking, 'Decomposition' refers to breaking down a problem into smaller, manageable parts. This approach makes complex problems easier to understand and solve, which is why this choice is correct.

What is "Abstraction"?

• Focusing only on the essential details of a problem

• Writing a program in Python

• Removing redundant variables in a program

• Breaking a problem into smaller parts

Answer explanation

Abstraction involves focusing only on the essential details of a problem while ignoring the irrelevant aspects. This helps simplify complex systems and makes it easier to manage and understand them.

What is an algorithm?

• A computer program

• A set of instructions to solve a problem

• A flowchart symbol

• A variable in Python

Answer explanation

An algorithm is best defined as a set of instructions to solve a problem. While a computer program implements algorithms, the essence of an algorithm lies in its step-by-step approach to problem-solving.

What is the purpose of a flowchart?

• To document the history of a program

• To visually represent the steps of an algorithm

• To create Python code

• To debug errors in a program

Answer explanation

A flowchart is used to visually represent the steps of an algorithm, making it easier to understand the process and flow of information. This helps in planning, analyzing, and communicating the logic of a program.

Which symbol is used for a process in a flowchart?

• Oval

• Diamond

• Rectangle

• Parallelogram

Answer explanation

In a flowchart, a rectangle symbolizes a process or operation. It is used to represent actions or tasks, while other shapes like diamonds indicate decisions and ovals represent start or end points.

Which symbol represents a decision in a flowchart?

• Oval

• Diamond

• Rectangle

• Parallelogram

Answer explanation

In a flowchart, a decision is represented by a diamond shape. This symbol indicates a point where a choice must be made, leading to different paths based on the outcome, unlike ovals, rectangles, or parallelograms which represent other functions.

What does "sequence" mean in a flowchart?

• Making a decision based on a condition

• Repeating a set of instructions

• Executing instructions in order, one after the other

• Stopping the algorithm

Answer explanation

In a flowchart, 'sequence' refers to executing instructions in a specific order, one after the other. This ensures that each step is completed before moving to the next, which is essential for the flow of the process.

What does "iteration" represent in a flowchart?

• Repeating a block of instructions

• Skipping unnecessary steps

• Breaking a program into smaller parts

Answer explanation

In a flowchart, "iteration" refers to the process of repeating a block of instructions. This allows for tasks to be executed multiple times until a certain condition is met, making it essential for loops in programming.

Which Python statement is used to display output?

• print()

• input()

• output()

• display()

Answer explanation

The correct statement to display output in Python is 'print()'. The other options, 'input()', 'output()', and 'display()', do not serve this purpose. 'print()' is specifically designed to output data to the console.

How do you receive input from the user in Python?

• input()

• print()

• receive()

• get()

Answer explanation

In Python, the correct way to receive input from the user is by using the input() function. The print() function is used to display output, while receive() and get() are not standard Python functions for user input.