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Simple Machines Questions - All Grades

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The Simple Machines questions below are in the following grade levels:
Grades: 1 2 3 4 5 6 7 8 9 11
1 2 3 4 ... 19
Grade 3 :: Simple Machines by tdowns
Which simple machine turns a Ferris wheel?
  1. pulley
  2. wedge
  3. inclined plane
  4. wheel and axle
Grade 8 :: Simple Machines by PrangeC
Grade 8 :: Simple Machines by PrangeC
An object being lifted or moved by a machine is a:
  1. fulcrum
  2. load
  3. work
  4. force
  5. friction
Grade 3 :: Simple Machines by tdowns
Grade 3 :: Simple Machines by tdowns
Grade 3 :: Simple Machines by tdowns
A screw is actually another simple machine. Which one?
  1. lever
  2. wheel and axle
  3. inclined plane
  4. pulley
Grade 5 :: Simple Machines by LaurieP
Which simple machine would stairs be an example?
  1. a wedge
  2. an inclined plane
  3. a pulley
  4. a lever
Grade 5 :: Simple Machines by LaurieP
Which is an example of a wedge?
  1. a doorknob
  2. a clock
  3. a zipper
  4. a light bulb
Grade 5 :: Simple Machines by Dad_Chris
Which is an example of a wheel and axle?
  1. Hammer
  2. Screwdriver
  3. Wagon
  4. Ramp
  5. Flag Pole
Grade 3 :: Simple Machines by Jacksonsmom
Grade 5 :: Simple Machines by sueito
Grade 5 :: Simple Machines by Dad_Chris
Grade 5 :: Simple Machines by Dad_Chris
In a lever (all classes of levers) the force needed will be smaller and the work will be easier if we do the following
  1. Move the load closer to the fulcrum
  2. Move the load away from the fulcrum
  3. The distance from the fulcrum does not matter
Grade 9 :: Simple Machines by jlovering
How much work would be required to lift a 25 kg object to a height of 20 meters?
  1. 500 Joules
  2. 1.25 Joules
  3. 245 Newtons
  4. 1.25 Newtons
  5. 4900 Joules
Grade 9 :: Simple Machines by jlovering
Abigail plunges a knife into a melon. She calculates that she did 60 Joules of work on the knife, but the knife only did 46 Joules of work on the melon. What best explains the difference?
  1. The knife reduced the force she applied to the knife
  2. Some of her mechanical energy was converted to other types of energy including waste heat instead of work
  3. She did her work on the melon, not the knife.
  4. The knife is not a simple machine, so it doesn't transfer work
  5. Her kinetic energy in the knife became potential energy in the melon.
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