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WorksheetsMachines and Mechanisms - Grade 4
Total questions: 25
Worksheet time: 15mins
What is a gear?
A gear is a wheel with a groove on its edge.
A gear is a wheel with teeth on its edge.
A gear is a heart-shaped wheel.
All of the above
Which of the following is an example of a can opener?
Pulley
Gear
What is a window blind an example of?
Pulley
Gear
What is this a picture of?
Fixed pulley
Movable pulley
There are many...in a clock.
Pulley
Gear
An elevator includes the following:
Gear
Pulley
Both gear and pulley
What is it called when two or more gears work together?
Gear machine
Gear trolley
Gear system
Gear train
What type of gear is this?
Spur gear
Bevel gear
Worm gear
Gear train
In which direction does the output gear (green gear) rotate?
Clockwise
Counterclockwise
Which direction is the input gear (red gear) rotating?
Clockwise
Counterclockwise
Which gear needs to move faster?
Input gear - Red
Output gear - Green
A spur gear refers to when two gears are connected in a plane.
Correct
Incorrect
Which gear meshes with another gear at an angle?
Spur gear
Bevel gear
Rack and pinion
Crown gear
What kind of simple machine is this?
Screw
Wheel and axle
Gear
Wedge
What kind of simple machine is this?
Screw
Wheel and axle
Gear
Wedge
What kind of simple machine is this?
Inclined plane
Wheel and axle
Wedge
Lever
What kind of simple machine is this?
Screw
Wheel and axle
Gear
Wedge
What is this?
Lever
Screw
Pulley
Inclined plane
A complex machine contains one or more simple machines.
True
False
This is an example of a compound machine.
Yes
No
This is an example of a compound machine.
True
False
A flagpole is an example of __________.
gear
pulley
wheel and axle
lever
Which of the following is NOT a gear that we learned?
Spur gear
Pulley gear
Worm gear
Bevel gear
What type of simple machine is a clothesline?
Pulley
Wheel and axle
Inclined plane
What is something that is lifted or carried?
Friction
Force
Effort
Load
