gear up
The teeth on this gear are slanted. This lets the teeth fit together on an angle. The bottom gear is horizontal and the top gear is vertical.
Bevel Gear
a) Can make things turn faster
b) Can increase the force
c) Can change the direction of another gear
d) All of the above
d) All of the above
The gear that is moved by another gear is called the...
driven gear
Do gears have teeth?
Yes.
Name something around your house with a gear.
When the teeth of two gears are in contact with each other they are…
Meshed
Gears turn on...
Axles
True or False: In a worm gear, the gear can turn the worm but the worm cannot turn the gear?
False
Which gear is faster the small or the big gear?
smaller gear
What is a name for a gear which has more than two or more gears?
gear train.
If the driver gear of a four gear train is turning clockwise, what direction is the fourth gear turning (driven gear)
Counter Clockwise
A large driving gear will cause a smaller driven gear to...
Turn faster
These types of gears have a wheel with teeth around the outside. They can be horizontal or vertical. They only work in a straight line.
Spur Gears
How many types of gears have we learned about? Can you name them?
4: Spur, bevel, worm, idler.
What is it called when two gears are connected?
Meshed
What is different about the way gears on a bicycle turn in comparison to standard spur gears?
The gears turn in the same direction.
The gear ratio can be calculated by...
Comparing the number of teeth on each gear
How do bicycle gears work when they never actually touch each other (not meshed).
The chain connects them.
If a small gear moves a full turn and a bigger gear makes half a turn, how much bigger is that big gear?
The bigger gear will be twice as big. (twice as many teeth).
Example: In a gear train, a small gear is making a larger gear turn. Will the larger gear turn faster or slower?
slower.
If the driver gear has 60 teeth and the driven gear has 30 teeth, how many times does the driver gear need to turn in order to turn the driven gear 4 times.
Two times
Two gears are meshed. Gear 1 has 20 teeth and gear 2 has 10 teeth. Which gear will spin faster? By how much?
Gear 2 will spin faster. It will be twice as fast.
worm gear
If there are 3 gears and the first one goes counter clockwise which way will the third one go?
counter clockwise
In a gear train, a larger gear makes a smaller gear turn. With the smaller gear turn faster or slower?
faster.