5th Grade Levers and Pulleys
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| A drawing that describes the relationship of all the parts of a system. | Diagram
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| A _____ uses a system of symbols and conventions to communicate information about lever design. | Diagram
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| The point at which a lever arm pivots. | Fulcrum
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| The weight or resistance that is moved using a simple machine. | Load
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| The force applied to move a load using a simple machine. | Effort
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| Class 1 levers have the ________ in the middle and the load and the effort at the ends. | Fulcrum
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| Class 2 levers have the ________ in the middle of the fulcrum and the effort at the ends. | Load
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| Class 3 levers have the _______ in the middle and the fulcrum and load at the ends. | Effort
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| Which lever class always gives advantage? | Class 2
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| Which lever class never gives you advantage? | Class 3
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| The F,L, and E stand for the part of hte lever system that is in the ______ of the lever. | Middle
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| Any of the six basic devices that provide mechanical or other advantage, such as pulleys and levers | Simple Machine
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| Two pulleys can provide greater ___________ than one when lifting loads. | Mechanical advantage
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| _____ = Force x Distance | Work
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| In a lever system and a pulley system, a ____ in effort is balanced by the distance over which the effort must act. | Reduction
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| The benefits gained by using simple machines are always balanced by costs. When the benefits ________ the costs, the machine is a useful tool. | Outweigh
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| a simple machine that people use to gain a mechanical advantage, such as making work easier | lever
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| a stick or beam free to pivot at a point | lever arm
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| effort is measured in _______ | Newtons
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| in a lever system the _______ from the fulcrum the effort is applied, the ______ the advantage is to the lever user | Farther
easier
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| __________ shows relationship between two variables and can be used to make predictions | two-coordinate graphs
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| _________ is a benefit obtain by using a lever (or other simple machine.) | advantage
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| _____ is a wheel with a groove rim in which a rope can run to change the ________ of the pull (force) that lifts the load | pully
direction
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| _____ _____ has a wheel that is attached to something _____ ___ ____. | fixed pully
above the load
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| ________ has a wheel that is attached to ______ | movable pully
the load
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| _______ ________reduces the effort needed to lift a load or overcome a resistance;it results from using a simple machine | Mechanical advantage
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| _________ is a change in direction that results from passing a rope through a pulley | Directional advantage
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| a single pulley can be set ups as a _____ pulley or a _______ pulley | Fixed
movable
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| Any of the 6 basic devices that provide a mechanical or other advantage, such as pulleys and levers | Simple Machine
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| _____ pulleys can provide greater mechanical advantage than one when lifting loads | two
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| the benefits gained by using simple machines are always balanced by _____ | costs
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| when the benefits outweigh the costs, the machine is a _____ tool | useful
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| in a lever system and a pulley system,a reduction in effort is balanced by the ________ over which the effort must act | distance
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