# 02 - Scratch Programming Concepts

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

TRUE

FALSE

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

scratchets

scripts

block-bits

mits

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

sprites

scratchites

mites

bytes

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?

inputting raw data into a computer

something that can be stored but changed

a decision made by a computer to chose an outcome

an outcome produced by the computer

6. What is a loop?

A loop is when end the program unexpectedly

A loop is the same thing as a variable

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

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

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

None of the above

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

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

An algorithm is basically an if statement inside a variable.

8. Algorithms are:

Only used in Maths

Only used in Computer Science

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

Only used in the creation of robots or sprite movement

9. An example of an algorithm is:

None of the above

An object that can be moved such as a sprite

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

Score

10. The three programming constructs are:

Sequence, Collision Detection and Variable creation

None of the above

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

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

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

None of the above

sequence

iteration

selection

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

None of the above

break problems into small parts, and solve each part

break problems into bigger problems

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

decision which produces a specific output depending on the input

command

sprite sequence

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

selection (if statements)

iteration (loop)

sequence (series of statements)

maintenance (maintaining the program)

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

variable

option

boolean

question