Computer Concepts Quiz

What is a variable in programming?

• A variable in programming is a constant value

• A variable in programming is a type of function

• A variable in programming is a symbolic name given to a value that can be changed during the program's execution.

• A variable in programming is a fixed value that cannot be changed

How do loops help in programming?

• Loops are used to slow down the execution of code

• Loops always execute the statements inside them only once

• Loops are not essential in programming

• Loops allow the execution of a set of statements repeatedly until a certain condition is met.

What are conditionals used for in coding?

• Conditionals are used to create loops in the code.

• Conditionals are used to format text in the code.

• Conditionals are used to comment out code in the code.

• Conditionals are used to make decisions in the code.

Explain the concept of functions in programming.

• Functions in programming do not take any input parameters.

• Functions in programming are blocks of code that perform a specific task. They can take input parameters, perform operations, and return a result. Functions help in organizing code, promoting reusability, and improving readability.

• Functions in programming are used for decorative purposes only.

• Functions in programming are not reusable and cannot be called multiple times.

What are events in programming?

• Events in programming are physical gatherings of programmers

• Events in programming are fictional scenarios created by developers

• Events in programming are actions or occurrences that happen in the system. They can be user-triggered, like clicking a button, or system-generated, like a timer expiring. Events are handled by event handlers, which are functions that are executed in response to a specific event.

• Events in programming are mathematical equations used to solve coding problems

What are operators in coding?

• Numbers representing specific actions in coding

• Words representing specific actions in coding

• Symbols representing specific actions in coding

• Images representing specific actions in coding

How are variables declared in Scratch?

• Variables in Scratch are declared by dragging and dropping a variable icon onto the stage

• Variables in Scratch are declared by writing the variable name in the code directly

• Variables in Scratch are declared by clicking on the 'Data' category in the blocks palette, then selecting 'Make a Variable' and entering the variable name.

• Variables in Scratch are declared by using voice commands to specify the variable name

Give an example of a loop in Scratch.

• repeat 5 times

• loop 5 times

• run 10 times

• repeat 10

When do you use 'if' statements in Scratch?

• When you want to add unnecessary complexity

• When you want to confuse the program

• When you want certain blocks of code to run only if a specific condition is met.

• When you want to make the code longer

How do you create a custom function in Scratch?

• Define the function using 'Make a Block' in 'More Blocks' category and add code blocks inside the custom function block.

• Define the function using 'Looks' category in Scratch

• Custom functions cannot be created in Scratch

• Use the 'Events' category to create a custom function