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Machines and their Mechanisms
Game Code: 1285615
English
18
Public
Grade 4 Ontario Curriculum related science questions
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What is a pulley?
A system that uses a rope and a wheel. The wheel has a grooved track for the rope to run through.
15
What is a moveable pulley?
A moveable pulley has a wheel that can move. The load is attached directly to the wheel.
15
What is a fixed pulley?
The wheel is in a fixed location, and the load is attached to a rope.
15
What is a compound pulley?
a combination of a fixed pulley and a moveable pulley. it requires two pulleys.
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What is a load?
weight
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What is speed?
How fast something moves
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What is force?
A push or a pull. A force can make an object start moving, or stop moving.
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What is a gear?
A gear is a special kind of wheel where a toothed wheel turns another toothed wheel. They are mechanisms used to change speed, direction and torque.
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What is rotary motion?
the movement of an object in a circular path along a fixed point called an axis.
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Linear motion
a movement that occurs in a straight line
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What is torque?
A measure of rotational force
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What is a machine?
A machine is something that is created to do a physical task, such as building, moving, or lifting.
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What is a mechanism?
A system in a machine that can modify (change) a motion.
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Name one type of gear
Bevel gear, Crown gear, Worm gear, Spur gear or Bevel gear
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What is the input component?
Where the force starts
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What is the output component?
The driven component.
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