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Year 9 App Development 3

Quiz by KS3 IT

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17 questions
Show answers
  • Q1
    What is the purpose of using 'if' statements in block-based JavaScript coding?
    To create loops
    To display messages
    To make decisions based on conditions
    To define functions
    30s
  • Q2
    In App Lab, what does the 'onEvent' block allow users to do?
    Style text
    Draw shapes
    Create interactive elements
    Import images
    30s
  • Q3
    What does the 'setText' block do in block-based JavaScript coding?
    Changes the color of an element
    Moves an element on the screen
    Changes the text of an element
    Plays a sound effect
    30s
  • Q4
    What is decomposition in computational thinking?
    Ignoring problems altogether
    Breaking a complex problem into smaller, more manageable parts
    Solving a problem without breaking it down
    Combining multiple problems into one big issue
    30s
  • Q5
    How does decomposition help in problem-solving?
    It makes the problem more complex and harder to solve
    It only focuses on one small aspect of the problem
    It is not a helpful problem-solving strategy
    It allows you to tackle each smaller part separately and then combine solutions to solve the larger problem.
    30s
  • Q6
    Why is it important for success criteria to be measurable?
    Measurement is unnecessary for setting goals.
    Measurable criteria allow progress to be tracked and evaluated.
    Unmeasurable criteria make goals more achievable.
    Measurable criteria stops you reaching your goal.
    30s
  • Q7
    Why is it important for success criteria to be specific?
    General criteria leave are hard to interpret.
    Specific criteria make goals more challenging.
    Specific criteria limit creativity.
    Specific criteria help clarify what needs to be achieved.
    30s
  • Q8
    What is the purpose of the Onevent code block in App Lab?
    To create arrays
    To comment out code
    To store variables
    To execute code when a specific event occurs
    30s
  • Q9
    How does the Onevent code block in App Lab differ from regular code blocks?
    It is triggered by specific events, rather than running continuously
    It can be used for mathematical calculations
    It is not visible in the code editor
    It can only contain text
    30s
  • Q10
    When using the Onevent code block in App Lab, what is an example of an event that can trigger the code execution?
    Screen color
    Font size
    Text alignment
    Button click
    30s
  • Q11
    What happens if the delay specified in the setTimeout() function is set to 0?
    The code inside the setTimeout() function will never be executed
    The code will wait indefinitely before executing
    An error will occur due to an invalid delay value
    The code inside the setTimeout() function will be executed immediately after the current code block
    30s
  • Q12
    What is the purpose of using SetTimeout code block in App Lab?
    To prevent errors from occurring in the program
    To introduce a delay in executing code to control the flow of the program
    To speed up the execution of code for better performance
    To display messages to the user immediately
    30s
  • Q13
    What is the syntax for using the setTimeout() function to delay the execution of a code block for 3 seconds in App Lab?
    setTimeout(function(){ codeBlockHere }, 3);
    setTimeout(3, function(){ codeBlockHere });
    setTimeout(3000, function(){ codeBlockHere });
    setTimeout(function(){ codeBlockHere }, 3000);
    30s
  • Q14
    How is the condition in an 'if' block evaluated in App Lab?
    It is evaluated as a string
    It is evaluated as a number
    It is not evaluated
    It is evaluated as either true or false
    30s
  • Q15
    What is the purpose of the 'else if' block in App Lab?
    To repeat a set of instructions
    To provide additional conditions to check if the initial 'if' condition is false
    To end the program
    To execute the same code as the 'else' block
    30s

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