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Explain the observations of the simple and complex machines through written or verbal forms, sketches or ICT in a creative way
Simple Machines & Complex Machine
10.2
Simple Machines & Complex Machine
The simple machine is a tool that helps us do work more easily and quickly.
Type of simple machine
Description
Wheel and axle.
Wheels and axles are devices that consist of wheels fixed on a rod called an axle
Example, door knob
Lever
Lever is a tool consisting of a rod fixed on a fulcrum to lift or pry up an object load
Example, broom
Screw
A screw is a grooved cylindrical tool that can be inserted into an object by rotating it to unite or tighten two parts of an object
Example, bottle and its cap
Gear
Gear is a tool that consists of jagged wheels
Example, gears in the clock
Pulley
A pulley is a device consists of a grooved wheel that allows a rope to pass through it to lift or lower a load
Example, window blinds
Inclined plane
Inclined plane is a tilted flat surface which has one of its ends are placed at different height
Example, the stairs
Wedge
Wedge is a tool which has one pointed end and is used to cut, hold and stop an object
Example, knife & doorstep
Complex machines
Some of the tools used in our daily lives consist of a combination of several types of simple machines
A tool that consists of a combination of more than one simple machine is a complex machine
A sustainable complex machine is a machine that has sustainable features, such as:
durability
not easily damaged
profitable to the users
does not adversely affect the environment
easy and safe to use
An example of a sustainable machine is a bicycle, because a bicycle is easy to use and does not require fosil fuel to move it. Therefore, the bicycle will not pollute the environment.
Simple Machines & Complex Machine
10.2
Simple Machines & Complex Machine
The simple machine is a tool that helps us do work more easily and quickly.
Type of simple machine
Description
Wheel and axle.
Wheels and axles are devices that consist of wheels fixed on a rod called an axle
Example, door knob
Lever
Lever is a tool consisting of a rod fixed on a fulcrum to lift or pry up an object load
Example, broom
Screw
A screw is a grooved cylindrical tool that can be inserted into an object by rotating it to unite or tighten two parts of an object
Example, bottle and its cap
Gear
Gear is a tool that consists of jagged wheels
Example, gears in the clock
Pulley
A pulley is a device consists of a grooved wheel that allows a rope to pass through it to lift or lower a load
Example, window blinds
Inclined plane
Inclined plane is a tilted flat surface which has one of its ends are placed at different height
Example, the stairs
Wedge
Wedge is a tool which has one pointed end and is used to cut, hold and stop an object
Example, knife & doorstep
Complex machines
Some of the tools used in our daily lives consist of a combination of several types of simple machines
A tool that consists of a combination of more than one simple machine is a complex machine
A sustainable complex machine is a machine that has sustainable features, such as:
durability
not easily damaged
profitable to the users
does not adversely affect the environment
easy and safe to use
An example of a sustainable machine is a bicycle, because a bicycle is easy to use and does not require fosil fuel to move it. Therefore, the bicycle will not pollute the environment.
Chapter : Machines
Topic : Explain the observations of the simple and complex machines through written or verbal forms, sketches or ICT in a creative way
Year 4
Science
View all notes for Science Year 4
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