Bøger af Bob Friedhoffer

EVERYTHING YOU NEED TO KNOW FOR SIMPLE SCIENCE FAIR PROJECTSLearn Experiments that help you to:Store and release energyRemove heat from an objectUnderstand how a jet engine worksBuild and operate a siphon Featuring experiments in:GravityEnergyAir and Water PressureFrictionMotionLightPerceptionBiology Grades 3-5

EVERYTHING YOU NEED TO KNOW FOR WINNING SCIENCE FAIR PROJECTSLearn Experiments that help you to:Build Electric CircuitsCreate an Object that Has Only One SideBreak Light into its Component partsCreate Static ElectricityDiscover How Light WorksFind Out Why Earth Rotates and What Keeps Us on the GroundExamine How Waves WorkDiscover Your “Green Thumb” Featuring Experiments in:ElectricityElectromagnetismGravityPlant GrowthLight and OpticsSurfacesReaction TimeCentrifugal ForceSound Waves Grades 5- 7