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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?
Pulley - to lift objects to a higher place
Wheel and axle - to cut or separate objects
Gear - to move objects easily
Lever - to carry or move heavy objects easily
15
What is a machine?
Any instrument that helps us move from a place to another pl
Any instrument invented by humans
Any instrument that helps us to do work easily
Any instrument that uses a motor to function
15
A machine is something we use to make work
slower
more difficult
easier
15
A simple machine...
has few or no moving parts
is something we use to make work easier
is made up of simple machines
15
A complex machine...
has few or no moving parts
is something we use to make work easier
is made up of simple machines
15
A tap is a simple machine that has...
inclined plane
pulley
wheel and axle
lever
15
This complex machine uses...
electricity from the mains
electricity from batteries
15
A wrist-watch is a complex machine which...
uses electricity from the mains
uses a battery
15
We push these with our feet. They make the wheels turn around.
pedals
brakes
front wheel
tyre
15
A bicycle is a ....
complex machine
simple machine
15
A bicycle needs our _________ to work
chemical energy
potential energy
kinetic energy
thermal energy
15
We use our hands to change these when we want to go up or down a hill.
brakes
gear controls
pedals
gears
15
The gears are ______
levers
wheel and axle
pulleys
wedge
15
We hold the _________ and use these to change direction.
brakes
gears
handlebars
gear controls
15
The pedals are....
inclined planes
wedges
pulleys
levers
15
The handlebars are....
levers
pulleys
wedges
inclined planes
15
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