Rube Goldberg Machine- Balloon Popper

Final design of my Rube Goldberg machine (aka balloon popper):

Task:

Is to pop a balloon without having to touch it.

Description of each step:

A: Step a uses thermal energy. bellow the ramp there is a candle which will be used to melt the ice cube that the ball is being blocked by. The flame is also stored as chemical energy while it is lit.

B: Step b is after the ice melts the ball will drop down the ramp and use mechanical energy (ball rolling/ movement of an object from one place to another). It also uses gravitational energy because gravity is what allows the ball to drop down the ramp.

C: Step c uses sound energy. Once the ball has dropped down the ramp it then hits a bell which triggers a sound.

D: Step d is after the ball hits the bell it then hits a domino causing them all to fall down by using thrust energy (thrust is a force or a push).

E: Step e occurs because the last domino has thumbtacks on it which pushes the balloon into a box with nails attached which creates it to pop turning potential energy to kenetic.

Forms of energy:

thermal energy/ kinetic                                                                                                                                            chemical/ potential                                                                                                                                              gravitational/ potential                                                                                                                                          mechanical/ kinetic                                                                                                                                                    sound/ kinetic                                                                                                                                                              thrust/ kinetic

Energy transformations:

A to B: Chemical energy to thermal to gravitional/ mechanical

B to C: gravitational to sound

C to D: sound to thrust

D to E: balloon potential to kenetic once popped

Three forms of simple machines:

Inclined plane– the ramp the ball falls down is a inclined plane.                                                  Lever– dominoes are a lever because levers are activated when something comes upon contact with another object.                                                                                                                          wedge– a thumbtack’s point is a wedge that splits open the balloon.

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Core Competency self-assessment:

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