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Third Grade (Grade 3) Simple Machines Questions

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Grade 3 Simple Machines

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There are eight types of simple machines.
  1. True
  2. False
Grade 3 Simple Machines
Maya turns the doorknob to open the door.
Door Knob
What type of simple machine is a doorknob?
  1. screw
  2. inclined plane
  3. wheel and axle
Grade 3 Simple Machines

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The wedge is most closely related to which other simple machine?
  1. lever
  2. pulley
  3. inclined plane
  4. wheel and axle
Grade 3 Simple Machines
Which is an example of a first class lever?
  1. Scissors
  2. Wheelbarrow
  3. Zipper
  4. Broom
Grade 3 Simple Machines
Lucas sweeps the kitchen floor.
Broom
What type of simple machine is a broom?
  1. lever
  2. screw
  3. pulley
Grade 3 Simple Machines

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Which of these sentences from the passage best describes the purpose of simple machines?
  1. Stairs and ramps may not look like machines.
  2. They change the direction or size of force, push or pull, needed to move an object.
  3. Simple machines have only one or two parts.
  4. Devices that include more than one than one simple machine are called compound machines.
Grade 3 Simple Machines
Scissors are compound machines. They are made up of more than one simple machine.
Scissors
What type of simple machine are the blades of the scissors?
  1. lever
  2. wedge
  3. wheel and axle
Grade 3 Simple Machines

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The picture shows a compound machine. It has more than one simple machine.
Wheelbarrow
Does the machine use a wheel and axle?
  1. no
  2. yes
Grade 3 Simple Machines

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Jonathan is using scissors to cut construction paper. The handles of scissors are levers. The blades of scissors are wedges.

Are scissors simple machines?
  1. no
  2. yes
Grade 3 Simple Machines

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Which sentence from the passage best explains how inclined planes help make work easier?
  1. A set of stairs is an example of an inclined plane, one of the six simple machines.
  2. The simplest inclined plane is a ramp.
  3. If you need to move a heavy box from the ground to a higher position, using a ramp can help.
  4. The ramp allows you do push the box with less force, but you push it over a longer distance.
Grade 3 Simple Machines

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A pulley is similar to another simple machine, the lever. A lever has a fulcrum, or fixed point, around which a bar turns. Which part of a pulley is most like a fulcrum?
  1. the rope or chain
  2. the load or object
  3. the grooved wheel
  4. the center of the wheel
Grade 3 Simple Machines

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An inclined plane is one of the six simple machines.
  1. True
  2. False
Grade 3 Simple Machines
Which is an example of a movable pulley?
  1. Movable Pulley
  2. Fixed Pulley
Grade 3 Simple Machines

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A wedge is a simple machine that is useful for a moving heavy object from a low place to a high place.
  1. True
  2. False
Grade 3 Simple Machines
Tyra uses this object to hold two boards together.
Screw
Which type of simple machine is the object?
  1. screw
  2. wedge
  3. wheel and axle
Grade 3 Simple Machines

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Two types of pulleys are
  1. wheel and rope.
  2. fixed and movable.
  3. compound and block and tackle.
Grade 3 Simple Machines
Which is an example of a third class lever?
  1. Pencil - Medium
  2. Broom
  3. Door Knob
  4. Scissors
Grade 3 Simple Machines

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Stairs are inclined planes. Which two other objects are most likely inclined planes?
  1. ladder and slide
  2. slide and hammer
  3. doorknob and ladder
  4. hammer and doorknob
Grade 3 Simple Machines

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Which of these body parts is the best example of a wedge?
  1. knee
  2. tooth
  3. elbow
  4. shoulder
Grade 3 Simple Machines

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Cameron is replacing a light bulb with the one shown.
Earth Day - Light Bulb
Which motion should Cameron use to fit the base of the bulb into the light socket?
  1. pull
  2. turn
  3. push
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