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02 - Scratch Programming Concepts

 1. Scratch is a beginner's visual (drag drop) programming tool that allows you to create interesting things including games.

  FALSE

  TRUE

 2. Coloured blocks of instructions are joined together to create programs. These are called:

  block-bits

  scratchets

  mits

  scripts

 3. Blocks (scripts) tell the characters on the screen what to do. Characters are called:

  scratchites

  bytes

  sprites

  mites

 4. What is the definition of a variable?

  Something (e.g. a value like a name or number) that is stored by the computer but the value changes.

  Something used by the character only

  Something that is not stored but the value changes

  Something that cannot be changed

 5. What is an IF Statement?

  an outcome produced by the computer

  a decision made by a computer to chose an outcome

  inputting raw data into a computer

  something that can be stored but changed

 6. What is a loop?

  A loop allows a program or block of code to run continuously until told otherwise.

  A loop is the same thing as a variable

  A loop is when end the program unexpectedly

  A loop is when you identify an error in your code and fix it

 7. What is an algorithm? (can you write algorithms in scratch?)

  An algorithm is just a sequence of instructions telling the computer what to do!

  An algorithm is a complex piece of code that cannot be written or implemented in scratch

  None of the above

  An algorithm is basically an if statement inside a variable.

 8. Algorithms are:

  Only used in Maths

  Only used in the creation of robots or sprite movement

  Only used in Computer Science

  All around us - we use them all the time without realising it!

 9. An example of an algorithm is:

  Score

  The steps involved in the process of 'making a cake'

  None of the above

  An object that can be moved such as a sprite

 10. The three programming constructs are:

  None of the above

  Statements (series of steps), spritation (creating sprites) and variableation (making variables)

  Sequence, Collision Detection and Variable creation

  Selection (if statements), Iteration (loops) and Sequence (series of steps)

 11. Several statements joined together in an order is called:
scratchsequence.png

  iteration

  sequence

  None of the above

  selection

 12. When programming it is important to 'decompose' this means to:

  break problems into small parts, and solve each part

  break problems into bigger problems

  delete problems and try to start without them

  None of the above

 13. Selection is the use of if statements to make a __________________

  sprite sequence

  decision which produces a specific output depending on the input

  help menu

  command

 14. Repeating a sequence or a statement more than once until a condition is met is called:
scratchforeverloop.png

  sequence (series of statements)

  maintenance (maintaining the program)

  selection (if statements)

  iteration (loop)

 15. A statement which can either be true or false is known as a..?
scratchboolean.png

  boolean

  variable

  question

  option


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