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Pressure & Friction
learn about these two subjects
|Friction makes things...........
|move and stop
|friction is the force we feel when
|two things are rubbed together
|friction is a
|the harder that things are rubbed together,the more..
|friction there is
|friction turns work into
|is there friction in space
|friction comes from
|can friction be controlled?
|friction helps trains and everything else get started with...
|can air cause friction?
|can some things naturally produce their own friction?
|can pressure push water out of a hose?
|How can hovercrafts float
|the can float because of air pressure
|where is pressure?
|pressure is a constant force on.....
|all directions at once
|if you ever get caught in quicksand or ice should you lie down or stand up?
|lie down to spread out the pressure
|what kind of pressure can make a car go up and down?
|what makes the hydraulics work?
|air pressure is pumped into a cylinder
|if there is not pressure we have a ...
|pressure can push in all directions at....
|watch as Bill Nye takes the cup of air underwater. The water pressure pushes the air up so that the same amount of air is taking up less space. The air is ....