Born: Aug. 5, 1978Soccer at 20, she was the youngest player on the 1999 American team that won the inaugural women's World Cup; member of U.S. 2000 women's olympic team; helped North Carolina win…
FIND OUT MOREMercury is the planet closest to the Sun, and experiences scorching temperatures by day. But it has virtually no atmosphere to trap the heat, so is freezing at night. It is a…
TURBINESFIND OUT MOREMany modern machines, from motorbikes to jet aircraft, are powered by engines. An engine is a machine that turns fuel into movement. The fuel is burned to generate heat…
CONDUCTOR AT WORKSUPERCONDUCTORSBIOGRAPHY: GEORG OHM German, 1789-1854INSULATORSFIND OUT MOREA conductor is a material that allows electric charge to move through it as an electric current.…
SPEEDING ROLLER COASTERSPEEDVELOCITYACCELERATIONFIND OUT MOREEverything in the world is moving. Even things that seem still are in motion, because the atoms inside them are vibrating. An object…
LANDFILL SITESROLLING STEELSHEET STEELRECYCLING PAPERRECYCLED PLASTICBIODEGRADABLEFIND OUT MOREMany things we normally throw away can be recycled (used again), including paper, glass, metals,…
EFFICIENCYPOWERJOULESFIND OUT MOREScientists use the word work to describe the energy needed to do a task, by making a force move through a distance. The amount of work done is equal to the…
TRAMPOLININGPLASTICITYFIND OUT MOREForces make things move, but they can also stretch things, squeeze them, and change their shape. A rubber ball changes shape when you use force to squeeze it…
LUBRICATING MACHINERYSTREAMLININGFIND OUT MOREIf you kick a ball across a playground, it bounces and rolls on the ground’s rough surface and soon comes to a halt. What slows it down is friction…
