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79 Cards in this Set

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EXAMPLE OF THINGS THAT USE CAMS AND CRANKS INCLUDE:
-SEWING MACHINE
-CAR ENGINE
ROLLING FRICTION HAS:
1. MOST FRICTION
2. LESS FRICTION
3. LEAST FRICTION
3. LEAST FRICTION
THE FORMULA FOR THE MECHANICAL ADVANTAGE IS CALLED "IDEAL" BECAUSE
FRICTION IS ALWAYS A FACTOR THAT LESSENS THE MECHANICAL ADVANTAGE. THEREFORE, WE CALCULATE WHAT THE ADVANTAGE WOULD BE WITHOUT FRICTION UNDER IDEAL CONDITIONS.
THE FORCE EXERTED ON A MACHINE IN CALLED
INPUT FORCE
THE SPIRAL AROUND THE SCREW IS CALLED?
THE THREAD
WHAT IS FRICTION?
A FORCE THAT TAKES PLACE WHEN ONE SURFACE SLIDES AGAINST ANOTHER
_____ TAKES PLACE WHEN USING AN INCLINED PLANE
FRICTION
THE AMOUNT OF EFFORT WE SAVE BY USING A TOOL IS CALLED:
MACHANICAL ADVANTAGE
THE FULCRUM OA A CLASS THREE LEVER IS ALWAYS WHERE?
AT ONE END
THE STUDY OF THE PROPERTIES OF MATTER AND ENERGY IS CALLED _______?
PHYSICS
TO DETERMINE THE IDEAL MECHANICAL ADVANTAGE FOR AN INCLINED PLANE (FORMULA)
IDEAL MECH. LENGTH OF BOARD
ADV. = _______________
HEIGHT OF THE
INCLINE
(DIVIDE LENGTH X HEIGHT)
MECHANICAL ADVANTAGE = (FORMULA)
MECHANICAL ADVANTAGE =

OUTPUT FORCE
____________
INPUT FORCE
THERE ARE ___ CLASSES OF LEVERS?
3
WHAT IS FORCE?
A PUSH OR PULL
A LONGER INCLINED PLANE AT THE SAME HEIGHT GIVES THE WORKER A _____ MECHANICAL ADVANTAGE.
(GREATER, LESS)
GREATER
THE FORCE EXERTED ON A LOAD BY A MACHINE IS CALLED?
OUTPUT FORCE
IN A MOVEABLE PULLEY, THE WHEEL IS ATTACHED TO WHAT?
THE WHEEL IS ATTACHED TO THE LOAD. THE WHEEL MOVES UP AND DOWN WITH THE LOAD
HOW IS FRICTION HELPFUL?
ALLOWS US TO SLOW DOWN A CAR, GRAB AN OBJECT, STOP WHEN WE ARE RUNNING
DESCRIBE A WEDGE
IT HAS A THICK END THAT TAPERS INTO A THIN, POINTED END
TOOLS MAKE WORK EASIER BECAUSE?
THEY CHANGE THE FORCE APPLIED TO THE WORK
CLASS ONE LEVERS CONSIST OF:
-A ROD
-FULCRUM
-LOAD ARM
-EFFORT ARM
FRICTION MAKES WORK MORE __________
DIFFICULT - BECAUSE OF FRICTION WE NEED TO INCREASE FORCE FOR WORK TO TAKE PLACE
WHAT SIMPLE TOOL SPREADS OUT FORCE OVER A LONGER DISTANCE?
INCLINED PLANE
ANYTHING THAT USES TWO OR MORE SIMPLE TOOLS IS CALLED?
A COMPLEX MACHINE
EXAMPLES OF A WHEEL AND AXLE INCLUDE:
-STEERING WHEEL
-A WATER WHEEL
-DOORKNOB
THE AMOUNT OF FRICTION DEPENDS UPON WHAT?
THE AMOUNT OF FORCE BETWEEN THE TWO OBJECTS OR SURFACES. THEREFORE, HEAVIER OBJECTS CREATE MORE FRICTION WHEN BEING MOVED.
AN INCLINED PLANE HAS A _____ SURFACE USED TO _____ A LOAD
SLANTED

RAISE
THE SIX BASIC TOOLS ARE:
INCLINED PLANE, WEDGE, SCREW, LEVER, WHEEL AND AXLE, AND PULLEY
IN A CLASS ONE LEVER, THE FULCRUM IN LOCATED WHERE?
BETWEEN THE LOAD AND EFFORT, DIVIDING THE LEVER (BAR) INTO TWO SIDES
WORK IS INCREASED IN TWO WAYS
-AN INCREASE IN THE WEIGHT OF THE LOAD
-AN INCREASE IN THE DISTANCE MOVED
THE FORCE USED TO PUSH A LOAD ON AN INCLINED PLANE IS CALLED:
THE INPUT FORCE
TOOLS DO WHAT TO FORCE?
-MAGNIFY FORCE
-ALTER THE DIRECTION OF THE FORCE
A FIXED PULLEY CHANGES THE DIRECTION OF WHAT?
THE INPUT FORCE
WORK IS DEFINED AS (FORMULA)
FORCE X DISTANCE = WORK
IN A CLASS ONE LEVER THE SIDE THAT HOLDS A LOAD IS CALLED?
THE LOAD ARM
FRICTION CAN BE DECREASED IN TWO WAYS
-LUBRICATION
-WHEELS
WHERE IS THE FORCE APPLIED TO A CLASS THREE LEVER?
BETWEEN THE FULCRUM AND THE LOAD
FRICTION IS GREATEST WHEN?
JUST BEFORE AN OBJECT MOVES
IN A CLASS ONE LEVER, THE SIDE THAT FORCE IS APPLIED TO IS CALLED?
THE EFFORT ARM
IN ORDER FOR WORK TO TAKE PLACE _____________________
A FORCE MUST ACT ON A LOAD AND MOVE IT
TRUE/FALSE
A FIXED PULLEY CAN HAVE MORE THAN ONE WHEEL IN THE SYSTEM
TRUE
WHAT IS A LOAD?
THE OBJECT TO BE MOVED
LIST SOME EXAMPLES OF A WEDGE
-PLOW
-ZIPPER
-SCISSORS
-AX
-DOOR STOP
STARTING FRICTION HAS:
1. MOST FRICTION
2. LESS FRICTION
3. LEAST FRICTION
1. MOST FRICTION (GREATEST AMOUNT OF FRICTION)
WHEEL AND AZLE - WHEN THE WHEEL TURNS, DOES THE AXLE TURN OR STAND STILL?
THE AXLE TURNS
SLIDING FRICTION HAS:
1. MOST FRICTION
2. LESS FRICTION
3. LEAST FRICTION
2. LESS FRICTION
HOW DOES FORCE EFFECT A WEDGE?
WHEN FORCE IS APPLIED TO THE THICK END OF THE WEDGE, THE POINTED END WILL GO UNDER OR INTO AN OBJECT
IN A CLASS ONE LEVER, IN WHAT DIRECTION DO THE LOAD AND EFFORT MOVE? (SAME OR OPPOSITE DIRECTION)
OPPOSITE
EXAMPLES OF SCREWS:
-FAUCET
-DRILL
-VICE
-NUTS/BOLTS
IN THE SIMPLE TOOL -WHEEL AND AXLE - THE GREATEST USE OF THE WHEEL IS WHAT?
TO REDUCE FRICTION
IDEAL MECHANICAL ADVANTAGE OF A SCREW =
DISTANCE TO COMPLETE 1 TURN
____________________________

DISTANCE BETWEEN 2 THREADS
EXAMPLES OF CLASS ONE LEVERS INCLUDE:
-SEESAW
-BALANCE SCALE
-BOAT OAR
-PLIERS
-SCISSORS
WHAT ARE THE 2 PARTS TO A LEVER?
-A BAR
-A FULCRUM
IN A CLASS TWO LEVER, THE EFFORT AND THE LOAD MOVE IN WHAT DIRECTION? (OPPOSITE OR SAME DIRECTION)
SAME DIRECTION
FRICTION (HELPS OR HURTS)SCREWS TO DO THEIR WORK.
HELPS
WHERE IS THE FULCRUM ON A CLASS TWO LEVER?
ALWAYS ON ONE END
THE DISTANCE BETWEEN THE THREADS OF A SCREW ARE CALLED?
THE PITCH
EXAMPLES OF CLASS THREE LEVERS INCLUDE:
-RAKE
-FISHING POLE
-TWEEZER
-HAMMER HITTING A NAIL
A SCREW IS A SIMPLE TOOL MADE FROM:
AN INCLINED PLANE WRAPPED AROUND A CYLINDER
EXAMPLES OF CLASS TWO LEVERS INCLUDE:
-NUTCRACKER
-WHEELBARROW
-PAPER CUTTER
-BOTTLE OPENER
WHEN A DRIVE WHEEL GEAR TURNS IT CAUSES WHAT?
IT CAUSES THE GEAR NEXT TO IT TO TURN
A PULLEY IS A SIMPLE TOOL. IT CAN BE DESCRIBED AS:
A WHEEL WITH A ROPE THAT RUNS ALONG THE GROOVE OF THE WHEEL
EXPLAIN RACK AND PINION GEARS
THEY HAVE ONE WHEEL AND A RACK WITH TEETH. THEY MOVE BACK AND FORTH INSTEAD OF AROUND
EXAMPLES OF FIXED PULLEYS INCLUDE:
-RAISING CURTAINS
-RAISING BLINDS
-RAISING SAILS
ANOTHER NAME FOR THE COMPOUND PULLEY IS WHAT?
A BLOCK AND TACKLE
IN A CLASS ONE LEVER, IF THE FULCRUM IN MOVED CLOSER TO THE LOAD, OR THE LOAD MOVES CLOSER TO THE FULCRUM WHAT HAPPENS TO THE AMOUNT OF FORCE?
THE AMOUNT OF FORCE NEEDED TO LIFT THE LOAD IS DECREASED
EXPLAIN SPUR GEARS
THEY ARE ROUND, LIE NEXT TO EACH OTHER, MAGNIFY FORCE, REVERSE DIRECTION
WHEEL AND AXLE -
THE TURNING OF THE WHEEL IS THE:
INPUT FORCE
EXPLAIN BEVEL GEARS
THEY COME TOGETHER AT AN ANGLE, CHANGING FORCE AND DIRECTION
WHAT IS A CRANK?
IT IS A WHEEL WITH A ROD ATTACHED TO IT. THE OTHER END OF THE ROD IS HINGED SO THAT THE ROD MOVES BACKWARDS AND FORWARD AS THE WHEEL MOVES
GEARS:
DRIVE WHEELS CAN MAKE SMALLER WHEELS TURN _____
FASTER (THEY CAN MAKE LARGER WHEELS TURN SLOWER)
THE TEETH OF THE GEARS ARE CALLED?
COGS
GEARS ARE __________________
WHEELS WITH TEETH ALONG THE OUTER EDGE
WHEN USING A MOVEABLE PULLEY, A LOAD TRAVELS HLAF THE DISTANCE OF THE EFFORT. SO FOR EVERY FOOT YOU WANT THE LOAD TO LIFT, YOU MUST PULL HOW MUCH ROPE?
YOU MUST PULL THE ROPE TWO FEET
A COMPOUND PULLEY IS MADE FROM ______________________
ONE FIXED PULLEY AND ONE MOVEABLE PULLEY
EXPLAIN WORM GEARS
THEY HAVE A WHEEL ON A SCREW THREAD TO CHANGE THE FORCE AND THE DIRECTION
SPRINGS HAVE 3 MAIN USES IN MACHINES:
1.TO RETURN SOMETHING TO ITS PREVIOUS POSITION
2.USED IN WEIGHING MACHINES
3. USED TO STORE ENERGY
IN A MOVEABLE, THE FORCE NEEDED TO LIFT A LOAD EQUALS _____THE WEIGHT OF A LOAD.
HALF
WHAT IS A CAM?
A WHEEL AND AXLE WITH AN EXTENSION ATTACHED TO THE WHEEL (WHEEL WITH A BUMP)