Team 1
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Team 2
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Teams
Name
Score
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monster
Reset all scores!
Oops!
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gold
Win 50 points!
Okay!
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gift
Win 25 points!
Okay!
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baam
Lose 25 points!
Oops!
20
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What is a worm gear?
Gears in which an axle or shaft has a screw thread that connects with another gear
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15
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What are spur gears?
Gears that meet on a flat or horizontal surface
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15
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What is the disadvantage of a fixed pulley?
The effort force is the same - it doesn't decrease the effort force.
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15
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What is the disadvantage of a movable pulley?
You have to pull up
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seesaw
Swap points!
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rocket
Go to first place!
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fairy
Take points!
5
10
15
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25
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banana
Go to last place!
Oops!
15
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What is a combined or compound pulley?
It is a combination of fixed and movable pulleys
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15
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What is the purpose of a pulley?
To make work easier.
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15
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If the first gear in a gear train is turning clockwise, what direction is the second gear?
counter clockwise
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15
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What are the disadvantages of a combined pulley?
none
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25
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If there are 10 gears in a gear train and the first gear is turning counter clockwise, tell me 2 things you know about the other gears
all the odd numbered gears are turning clockwise, the even numbered gears are turning counter clockwise
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heart
Other team wins 15 points!
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seesaw
Swap points!
Okay!
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gift
Win 15 points!
Okay!
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lifesaver
Give 25 points!
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20
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What is a rack and pinion?
A gear system in which a single gear meets with a toothed rack
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15
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What force is caused by objects rubbing together?
friction
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15
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What is a gear train?
A group of two or more gears working together
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25
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What can gears do? (What is their purpose?)
They can change the speed and direction of motion. Also - they make work easier
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