Structures & Material

The Four Forces

FOUR FORCES AFFECT THINGS THAT FLY: 1.      Weight is the force of gravity. It acts in a downward direction—toward the center of…

Boomi Nathan

We Aren’t Built to Fly

WE JUST AREN’T BUILT TO FLY Birds inspired our first attempts to fly, but our progress was limited until we…

Boomi Nathan

Gravity Keeps Us Down to Earth

WHAT IS GRAVITY? Gravity holds us to the surface of the Earth and keeps our atmosphere wrapped around our planet.…

Boomi Nathan
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