Hi, you've asked an incomplete question. Here's the excerpt of lines 117-126 from the Invasion of Mars:
"This end of the thing is beginning to
flake off! The top is beginning to rotate like a screw! The thing
must be hollow!
Voices. She’s a movin’!
Look, the darn thing’s unscrewing
Keep back, there! Keep back, I tell you!
Maybe there’s men in it trying to escape!
It’s red hot, they’ll burn to a cinder!
Keep back there. Keep those idiots back!
[Suddenly the clanking sound of a huge piece of falling
metal.
Voices. She’s off! The top’s loose!
Look out there! Stand back!
Phillips. Ladies and gentlemen, this is the most terrifying
thing I have ever witnessed."
Step-by-step explanation:
From the excerpt above we notice a vivid description of the supposed sound of the "extraterrestrial" object from mars.
In other words, the main purpose of lines 117-126, is to create a thrilling feeling in the minds of the avid reader; making the object become real in the minds of the reader or hearer as the case may be.