OUCH! #6 (Vocal Chords& Whoosh!)

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English Name: *

Class: *

J207

J307

Seat Number: *

Operation Ouch- Vocal Chords (聲帶)

#1 When we are young, our voices are ... *

higher (high pitch)

louder

lower (deeper/ low pitch)

#2. To see his vocal chords, Dr. Chris puts a camera into... *

his ear

his mouth

his nose

#3 In this picture, we are looking.... *

out of a mouth.

out of a nose.

into a stomach.

#4 The doctor's vocal chords are tighter and faster when he... *

holds his breath

hums a high note.

hums a low note.

#5 Dr. Xand breaths in a gas (Helium [He]) that is lighter than air. This makes his voice... *

higher

lower

disappear

#6 Dr. Chris breaths in a heavy gas (Sulfur Hexaflouride [SF6]). That makes his voice... *

higher

lower

disappear

Video #2: The Whoosh Bottle experiment

#7. The men pour some _______ into the bottle and then shake and roll it. *

alcohol

soap

water

#8 To light the vapors (gas) inside, he uses... *

a flint stone.

a lighter.

some matches.

#9. In the second bottle, the man puts his hand on the top of the bottle after the experiment. This causes the bottle to.... *

grow- expand (成長-擴展)

shrink - collapse (收縮-塌陷)

burst - explode (爆發-爆炸)

Stupid Guy- Whoosh.

#10. (Bonus question) This very lucky person could have been hurt because.... *

glass bottles can explode with changes of heat.

he didn't wear safety glasses.

he could have burned his finger.

Science for Dum- Dums!

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