By JASON

VElARDE,

GRIFITH WEE,

AND EMILY

WONG

RUBE GOLDBERG

MACHINE

Person shoots

and h i ts the 12

bal l w i th a cue

st ick .

STEP 1

The 12 bal l h i ts

a second cue

st ick .

STEP 2

The second cue

st ick h i ts a toy

car, pushing i t

onto a teeter -

tot ter.

STEP 3

The car ro l ls

for ward,

t ipping the

teeter - totter.

The car then

ro l ls to the end

of the teeter -

tot ter and h i ts

the 7 bal l .

STEP 4

The 7 bal l ro l l s

down a t rack .

STEP 5

The 7 bal l h i ts

the f i r s t

domino,

located at the

end of the

t rack .

STEP 6

The f i r s t

domino fa l l s ,

h i t t ing the

second and

t r igger ing the

fa l l o f the

ent i re domino

sequence.

STEP 7

The f inal

domino knocks

over a

container of

marbles .

The marbles

ro l l onto and

down a t rack .

STEP 8 & 9

The marbles h i t

a peg at the

bot tom of the

t rack .

STEP 10

The peg is

re leased,

t r igger ing a

pul ley.

STEP 11

A wal let , used

as the pul ley

counter weight ,

drops when the

peg is

re leased.

STEP 12

The top of the

bal loon

(at tached by

tape to the

opposi te end of

the wal let -

pu l ley s t r ing)

l i f ts as the

st r ing is pul led

taut .

STEP 13

The baking

soda in the

bal loon drops

into the bot t le

of v inegar, and

the chemical

react ion causes

the bal loon to

inf late .

STEP 14

The marbles

f rom Step 10

cont inue to

ro l l , past the

peg , and h i t

the f i r s t

domino of a

ser ies of

dominoes.

STEP 15

The dominoes

in the ser ies a l l

fa l l .

STEP 16

The last

domino pul ls

o f f the tape

stuck to the

desk .

STEP 17

When the tape

is re leased, i t

lets go of a

pendulum wi th

nai ls at tached

to i t , which

then swings

towards the

inf lated

bal loon.

STEP 18

The pendulum

nai ls h i t the

bal loon, and

the bal loon

pops!

STEP 19