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4th Grade Science

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Question
Answer
long bar with a support   lever  
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the support on which a lever rests   fulcrum  
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the weight to be lifted or moved   load  
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a simple machine with slanted threads along its sides   screw  
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a special inclined plane used to split things or move things or hold things in place   wedge  
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a ramp used to move things up or down   inclined plane  
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a wheel and a rod joined to the center of the wheel. it is used to move or turn objects   wheel and axle  
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a wheel with a rope, wire or chain around it.   Pulley  
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the force used on a simple machine   effort  
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One or more simple machnes combined together   complex machines  
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Created by: czeponis
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