Harness it
by Tammy Enz
"Explains the principles of inventing and provides photo-illustrated instructions for making a variety of projects that harness energy"--Provided by publisher.
Force and energyPower resourcesJuvenile literatureExperimentsPower resources, juvenile literatureForce and energy, juvenile literatureRessources énergétiquesOuvrages pour la jeunesseExpériencesForce et énergieEnergy resources