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SS4 unit 7 Review

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  • What is a machine?
    Any instrument that uses a motor to function
    Any instrument that helps us move from a place to another pl
    Any instrument that helps us to do work easily
    Any instrument invented by humans
  • What are these?
    They are brakes
    They are handlebars
    They are brake levers.
    They are gears
  • Which of the following is not true?
    Gear - to move objects easily
    Wheel and axle - to cut or separate objects
    Pulley - to lift objects to a higher place
    Lever - to carry or move heavy objects easily
  • What are these?
    They are gear controls.
    They are gears.
    They are brakes.
    They are wheels
  • A simple machine...
    is something we use to make work easier
    is made up of simple machines
    has few or no moving parts
  • We hold the _________ and use these to change direction.
    gear controls
    gears
    handlebars
    brakes
  • What are these?
    gears
    pedals
    a tyre
    brakes
  • A wrist-watch is a complex machine which...
    uses a battery
    uses electricity from the mains
  • This complex machine uses...
    electricity from the mains
    electricity from batteries
  • Robots use _______ .
    solar energy
    electricity
    chemical energy
  • What is this?
    It is a tyre.
    It is a front wheel.
    It is a back wheel.
  • A tap is a simple machine that has...
    lever
    pulley
    wheel and axle
    inclined plane
  • We use our hands to change these when we want to go up or down a hill.
    gears
    pedals
    brakes
    gear controls
  • These are pulleys. The force from them travels along the chain to the back wheel.
    brakes
    gears
    pedals
    handlebars
  • What are these?
    They are brake levers
    They are gear controls
    They are brakes.
    They are cassettes
  • What is this?
    brakes
    wheel
    chain
    a tyre
  • We push these with our feet. They make the wheels turn around.
    tyre
    pedals
    front wheel
    brakes
  • The gears are ______
    pulleys
    wheel and axle
    levers
    wedge
  • When we want to stop the bicycle, we use our hands to ______ and ______ the brake levers.
    push,twist
    push,pull
    pull,twist
  • What are these?
    They are gear controls.
    They are gears
    They are brake levers
    They are brakes
  • A complex machine...
    is made up of simple machines
    is something we use to make work easier
    has few or no moving parts
  • What is this?
    A bicycle chair
    A bicycle seat
    A triangle
  • A bicycle is a ....
    simple machine
    complex machine
  • The pedals are....
    wedges
    pulleys
    inclined planes
    levers
  • What is this?
    It is a front wheel
    It is a tyre.
    It is a back wheel
  • A __________ is a machine that can do work automatically.
    simple machine
    TV
    Calculator
    robot
  • The _____ press against the wheels and this force slows the speed of the bicycle.
    back wheel
    front wheel
    pedal
    brakes
  • These are levers. We use them to change direction when we're on a bicycle.
    handlebars
    gears
    brakes
    front wheel
  • A machine is something we use to make work
    slower
    more difficult
    easier
  • What are these?
    They are chains
    They are brakes
    They are handlebars
    They are pedals
  • A bicycle needs our _________ to work
    thermal energy
    kinetic energy
    potential energy
    chemical energy
  • What is this?
    A handlebar
    pedals
    A helmet
  • The handlebars are....
    wedges
    levers
    pulleys
    inclined planes
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