Labels:door | earth | hakham | map | person | plant | plaything | school newspaper | sculpture | sky | tree | windowpane OCR: PRINCIPL ES OF SCIENCE This screen allows you to choose one of the scientific principles that underlie the machines in The Way Things Work. Click on the red box for Wor more information PRINCIPL ES SCIENCE Workahop GEARS AND SENSORS AND DETE OR Machines SPRINGS SCREWS ple RESSURE FRICTION ELECTRICITY DNILVOA CAMSAND WHEEAS SOLND CRANK MAGNETISS LEVERS Jndr Oprlons IMNCE LKGHT AND COMPUTERS HEXY TELECOMMUNICATIONS HELP CONTENTS PRINGIPLES WHERIS
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