Welcome to the MathScience Innovation Center

“LEGO Machines and Energy” with Mrs. Kappus

SIMPLE MACHINES

SIMPLE MACHINESCompound Machine is a machine made of two or more simple machines.

Remote Controlled MACHINES

SIMPLE MACHINESWork = Force X Distance

SIMPLE MACHINESEnergy

• is the ability to do work.

LAPTOP COMPUTERThe Laptop Computer runs software:•ROBOLAB

LAPTOP COMPUTERThe mouse is used to move• __________

LAPTOP COMPUTERThe mouse is used to move•The CURSOR

LAPTOP COMPUTER

A Picture of an object on a computer is _____an ICON

REMOTE CONTROL DEVICE The Gray Cube is a _____

REMOTE CONTROL DEVICE The Gray Cube is a MOTOR. The motor uses what type of

energy to move?ELECTRICITY

ASSEMBLE REMOTE CONTROL CAR Mount Motor Gears

REMOTE CONTROL DEVICE The Yellow BRICK is an RCX Brick

which contains a computer. The Brick uses what type of energy

to run?• ELECTRICITY

The RCX Bricks will control the Car when we are done.

ASSEMBLE REMOTE CONTROL CAR Mount Motor Gears Mount RCX Brick Test Car with Program #1

RECAP WORK = Force x Distance ENERGY is the ability to do work Energy can be potential or kinetic The Brick will release the same

energy every time• doing the same work every time

Will the car always go the same distance?

Experiment Begin with a question.

Will the car travel farther on the track or on the carpet surface?

EXPERIMENTHypothesis

EXPERIMENT

Hypothesis-An educated guess or a prediction

EXPERIMENTHypothesis The car will travel farther on the ________.

EXPERIMENTHypothesisConstant

EXPERIMENT

•Constant-parts of the experiment that stay the same

EXPERIMENT HypothesisConstantVariable

EXPERIMENT

•Variable-the factors in an experiment that change.

LEGO Energy Team members: _______________

Experiment : Distance Robotic car travels. Hypothesis:

The car will travel farther on the ______________________________. Trial 1 Trial 2 Trial 3 Longest Distance traveled Track in centimeters Carpet in centimeters Conclusions: _________________________________________________ Investigation: What happens to the car when it tows a load without using a simple machine and when a simple machine is used? Prediction: _________________________________________________

_____________ N Force used to move block without the pulley.

_____________ N Force used to move block with pulley. Which force is greater?

Observations: ____________________________________________

Mechanical Advantage

Diagram used with permission from: EngQuest2010 and Engineers Australia

Towing the load without a simple machine

LEGO Energy Team members: _______________

Experiment : Distance Robotic car travels. Hypothesis:

The car will travel farther on the ______________________________. Trial 1 Trial 2 Trial 3 Longest Distance traveled Track in centimeters Carpet in centimeters Conclusions: _________________________________________________ Investigation: What happens to the car when it tows a load without using a simple machine and when a simple machine is used? Prediction: _________________________________________________

_____________ N Force used to move block without the pulley.

_____________ N Force used to move block with pulley. Which force is greater?

Observations: ____________________________________________

Towing the load with a pulley

Force investigation

LEGO Energy Team members: _______________

Experiment : Distance Robotic car travels. Hypothesis:

The car will travel farther on the ______________________________. Trial 1 Trial 2 Trial 3 Longest Distance traveled Track in centimeters Carpet in centimeters Conclusions: _________________________________________________ Investigation: What happens to the car when it tows a load without using a simple machine and when a simple machine is used? Prediction: _________________________________________________

_____________ N Force used to move block without the pulley.

_____________ N Force used to move block with pulley. Which force is greater?

Observations: ____________________________________________

skateboard