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Gears

Total questions: 26

Worksheet time: 13mins

Name
Class
Date
1.

Transfers motion between two shafts running parallel to each other. They are characterized by their teeth, which are straight and parallel to the gears axis of rotation.

a)

Spur Gear

b)

Worm Gear

c)

Bevel Gear

d)

Crown Gear

2.

Conically shaped gears that transmit power between shafts that have intersecting axes of rotation.

a)

Spur Gear

b)

Bevel Gear

c)

Rack Gear

d)

Crown Gear

3.

A gear mounted to a straight rod, such that it moves in a linear fashion when torque is applied to it by a spur gear (known as the pinion gear).

a)

Spur Gear

b)

Crown Gear

c)

Bevel Gear

d)

Rack and pinion Gear

4.

The relationship between the numbers of teeth on two meshing gears used to transmit motion. It reflects the change in mechanical advantage resulting from the gears.

a)

Gear pitch

b)

Tooth decay

c)

Gear ratio

d)

aspect pitch

5.

The ratio of output force to the input force applied to a mechanism is known as ___________________.

a)

Pressure

b)

Weight

c)

Mechanical Advantage

d)

3.14

6.

____________ gears come in pairs that mate together to transfer power between perpendicular shafts that have axes of rotation offset from one another. These gears resemble screws; as they spin they turn their mating wheel.

a)

Spur gears

b)

Bevel Gears

c)

Crown Gears

d)

Worm gears

7.

True or False: Two meshed gears always rotate in opposite directions

a)

True

b)

False

8.

The ______ gear is always the driving gear

a)

Compound

b)

rack and pinion

c)

bevel

d)

Worm

9.

The ____ gear is used to convert between rotary and linear motion

a)

bevel

b)

worm

c)

rack and pinion

d)

idler

10.

____ gears are used to transfer drive on a 90 degrees angle.

a)

Bevel

b)

Rack and pinion

c)

Worm

d)

Compound

11.

_____ are directly driven by a motor

a)

Steering

b)

Driver

c)

Driven

d)

Idler

12.

The most common gear is the _____ gear with straight teeth, mounted parallel

a)

bevel

b)

worm

c)

spur

d)

idler

13.

A _______ is a wheel with teeth that meshes with another similar gear that is typically larger or smaller.

a)

gear

b)

tyre

c)

pulley

d)

rack and opinion

14.

True or False:

A gear ratio is the ratio of the number of rotations of a driver gear to the number of rotations of a driven gear.

a)

True

b)

False

15.

The idler gear allows the driven and driving gears to rotate in the same _______

a)

speed

b)

way

c)

direction

d)

momentum

16.

What is the Gear Ratio of a driven gear with 8 teeth and a driving gear with 32 teeth?

a)

4:1

b)

1:4

c)

0.4:1

d)

0.25

17.

What do we call the gear connected to the output, such as a wheel or mechanism in a system?

a)

Driving Gear

b)

Driven Gear

c)

Bigger Gear

d)

Smaller Gear

18.
The purpose of the IDLER GEAR is to ____________.
a)
change the speed of rotation
b)
make the model harder to build
c)
add more gears for fun
d)
change the direction of rotation
19.
True or False: Gears next to each other turn in the same direction.
a)
True
b)
False
20.
To INCREASE speed of rotation, you can ____________________.
a)
add more gears
b)
change from a LARGE gear to a SMALL gear
c)
turn the handle less times
d)
change from a SMALL gear to a LARGE gear
21.
Which of these would be the best lubricant to reduce friction on your bicycle gears?
a)
oil
b)
sand
c)
water
22.
Where might you find gears?
a)
tires
b)
clock
c)
chopsticks
d)
swimming pool
23.
Why are there cogs/ teeth on a gear? 
a)
to slow it down
b)
to make it go faster
c)
so they can grip / mesh with other gears
24.

How do make a gear train?

a)

put gears on a railroad track

b)

join 2 or more gears together

25.
When gears are the same size they turn the same number of times.
a)
True
b)
False
26.
When there are more teeth on the second gear, it turns less than the big gear. 
a)
True
b)
False