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SS4 unit 7 Review
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Game Code: 1043062
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Which of the following is not true?
Lever - to carry or move heavy objects easily
Wheel and axle - to cut or separate objects
Gear - to move objects easily
Pulley - to lift objects to a higher place
15
What is a machine?
Any instrument that helps us move from a place to another pl
Any instrument that helps us to do work easily
Any instrument that uses a motor to function
Any instrument invented by humans
15
A machine is something we use to make work
more difficult
slower
easier
15
A simple machine...
is something we use to make work easier
has few or no moving parts
is made up of simple machines
15
A complex machine...
is made up of simple machines
has few or no moving parts
is something we use to make work easier
15
A tap is a simple machine that has...
inclined plane
pulley
lever
wheel and axle
15
This complex machine uses...
electricity from the mains
electricity from batteries
15
A wrist-watch is a complex machine which...
uses a battery
uses electricity from the mains
15
We push these with our feet. They make the wheels turn around.
tyre
brakes
pedals
front wheel
15
A bicycle is a ....
complex machine
simple machine
15
A bicycle needs our _________ to work
chemical energy
kinetic energy
thermal energy
potential energy
15
We use our hands to change these when we want to go up or down a hill.
gear controls
pedals
brakes
gears
15
The gears are ______
levers
wedge
wheel and axle
pulleys
15
We hold the _________ and use these to change direction.
brakes
handlebars
gear controls
gears
15
The pedals are....
pulleys
wedges
levers
inclined planes
15
The handlebars are....
wedges
pulleys
levers
inclined planes
15
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