The long A sound is "ay" as in day and way.
In pronunciation guides, the long A is marked with a bar called a macron: ā
Write an experiment to find the velocity of sound?
You write sizzle.
You could write Bzzzz or Zzzz or any other buzzing sort of sound.
You could listen to the sound, and write out what it sounds like to you.
slurp
FWWPSSHHH
zzzzzz
9000
grrrrrrrrr
The sound of a sneeze can be written as "achoo," "achoo," or "atchoo."
baaah
dagadagadagadagadaga...