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15
×
A __________ is a machine that can do work automatically.
simple machine
Calculator
TV
robot
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15
×
Which of the following is not true?
Gear - to move objects easily
Wheel and axle - to cut or separate objects
Lever - to carry or move heavy objects easily
Pulley - to lift objects to a higher place
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15
×
What are these?
They are brakes
They are gear controls.
They are gears
They are brake levers
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15
×
We use our hands to change these when we want to go up or down a hill.
pedals
gears
brakes
gear controls
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15
×
A bicycle is a ....
simple machine
complex machine
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15
×
A tap is a simple machine that has...
inclined plane
wheel and axle
pulley
lever
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15
×
When we want to stop the bicycle, we use our hands to ______ and ______ the brake levers.
push,twist
pull,twist
push,pull
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15
×
What are these?
They are brakes
They are handlebars
They are gears
They are brake levers.
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15
×
What is this?
brakes
a tyre
wheel
chain
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×
baam
Lose 25 points!
Oops!
×
seesaw
Swap points!
Okay!
×
gift
Win 20 points!
Okay!
×
baam
Lose 25 points!
Oops!
×
banana
Go to last place!
Oops!
×
star
Double points!
Okay!
×
fairy
Take points!
5
10
15
20
25
×
baam
Lose 15 points!
Oops!
×
baam
Lose 20 points!
Oops!
×
seesaw
Swap points!
Okay!
×
gift
Win 5 points!
Okay!
×
thief
Give points!
5
10
15
20
25
15
×
These are pulleys. The force from them travels along the chain to the back wheel.
pedals
brakes
gears
handlebars
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15
×
A wrist-watch is a complex machine which...
uses electricity from the mains
uses a battery
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15
×
What is this?
It is a tyre.
It is a back wheel
It is a front wheel
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15
×
The handlebars are....
pulleys
inclined planes
levers
wedges
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