Term
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Definition
| What word means: the ability to do work? |
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Term
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Definition
| What word means: force x distance? |
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Term
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Definition
| What word means: the push or pull on an object? |
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Term
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Definition
| Is lifting a stack of books work? |
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Term
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Definition
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Term
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Definition
| For work to be done, the movement must be in the same direction as the ________. |
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Term
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Definition
| Work is not done unless something is __________. |
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Term
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Definition
| Work is not done unless something is __________. |
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Term
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Definition
| Is kicking a football work? |
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Term
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Definition
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Term
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Definition
| What word means: energy of position? |
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Term
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Definition
| What word means: energy of motion? |
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Term
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Definition
| Which simple machine is a board that pivots on a FULCRUM? |
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Term
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Definition
| What word means: the point on which a lever pivots? |
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Term
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Definition
| Which simple machine is a ramp? |
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Term
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Definition
| What force always opposes (goes against) motion? |
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Term
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Definition
| What is a disadvantage (bad thing)about friction? |
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Term
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Definition
| What is one way to reduce friction in machines? |
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Term
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Definition
| How many types of levers are there? |
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Term
| lever, fulcrum, load, effort(force) |
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Definition
| What are the four parts of a lever? |
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Term
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Definition
| Which type of lever has the fulcrum in the middle between the load and force? |
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Term
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Definition
| Which lever has the load in the middle, between the fulcrum and effort? |
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Term
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Definition
| Which class of lever has the effort (force) in the middle, between the load and fulcrum? |
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Term
| see saw, crowbar, hammer removing a nail |
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Definition
| Give an example of first class levers? |
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Term
| door, nutcracker, wheel barrow |
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Definition
| Give an example of a second class lever. |
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Term
| rake, broom, hockey stick |
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Definition
| Give an example of a third class lever |
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Term
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Definition
| What word means: a device that makes work easier? |
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Term
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Definition
| Which simple machine is two different sized wheels that turn together around the same point? |
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Term
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Definition
| In a wheel and axle, which wheel turns the longer distance? |
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Term
| bike wheels, skate board wheels, car wheels |
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Definition
| Name 3 examples of wheels and axles at your home. |
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Term
| Doorknob, pencil sharpener, lock |
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Definition
| Name 3 examples of wheels and axles in your school. |
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Term
| Because the effort is spread over a longer distance |
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Definition
| Why is the larger wheel easier to turn? |
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Term
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Definition
| What word means: a rope wrapped around a wheel? |
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Term
| Direction of force, size of force or both |
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Definition
| What can a pulley change? |
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Term
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Definition
| When you turn a large wheel of a wheel and axle, are you using more or less force? |
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Term
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Definition
| When you turn the axle of a wheel and axle are you using more or less force? |
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Term
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Definition
| When you turn the axle of a wheel and axle are you turning a greater or less distance? |
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Term
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Definition
| When you turn the wheel of a wheel and axle are you turning greater or less distance? |
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Term
| Fixed, movable, and block & tackle |
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Definition
| What are 3 types of pulleys? |
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Term
| The direction of the force |
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Definition
| What do fixed pulleys change? |
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Term
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Definition
| What does a movable pulley increase? |
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Term
| Raising a flag, an elevator, window blind |
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Definition
| Give 3 examples of pulleys. |
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Term
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Definition
| What is a wedge used for? |
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Term
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Definition
| When a wedge is sharper it does it require more or less forec? |
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Term
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Definition
| A screw is made from which other simple machine? |
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Term
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Definition
| Name 3 examples of wedges. |
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Term
| drill, screw on lid, bolt |
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Definition
| Name 3 examples of screws. |
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Term
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Definition
| What 4 things can a screw do? |
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