Page 57 - TP_Modular_V2.1_Class5
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start sound Meow   block plays a sound without pausing
                    the script. The sound options are Meow and record.

                      play sound Meow  until done   block plays the sound by pausing
                    the  script until the  sound has finished playing.  The
                    sound options are “Meow” or any record.

                    To stop all sounds being played on all Sprites, use  stop all sounds  block.
                     clear sound effects   block clears all existing sound effects.


                 Events Blocks

                 An event is a happening which occurs due to some other things that happened

                 before it. These are the most important code blocks in Scratch as a script can't run
                 without Event blocks. So, Events blocks actually control how the blocks in a script,
                 will start to run, if a particular action is done. Events blocks control events and the
                 starting of scripts. They are yellow in colour.

                     when    clicked   block activates  the  script  attached  to  this          space

                    block when the Green flag or Go button is clicked.                           up arrow
                                                                                                 down arrow
                     when space  key pressed  block activates the script when  the               right arrow
                    chosen key is pressed. You can choose from the given keys                    left arrow
                    or you can choose the any option.                                            any
                                                                                                 a
                     when this sprite clicked    block  activates  the  script  attached  to

                    this block when you click the sprite.

                 Control Blocks

                 They are looping blocks which are used when the same blocks have to be repeated
                 for a number of times under certain conditions. They are orange in colour. The

                 most commonly used control blocks are:
                     The wait block pauses the running of the script for the number of
                                                                                                     wait 1  seconds
                    seconds given in the block. You can use this block when two move

                    or speak blocks are coming one after the other.
                     The repeat block repeats a set of blocks for a given number of                     repeat   10
                    times. This block is also used to draw shapes where we have to

                    give the same blocks again and again for a number of times.
                     The forever block keeps on repeating a set of blocks till the stop                 forever
                    button is clicked. This block is similar to repeat block and expands

                    automatically to accommodate the blocks you snap inside it.




                                                                                      More Blocks in Scratch      55
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