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What is the difference between a simple and a complex machine?
A simple machine is a basic tool that helps apply force and do work. A complex machine is made up of two or more simple machines.
List 3 examples of things with pulley mechanisms
crane, well, elevator
List 3 examples of things with gear mechanisms
drill, clock, guitar
List one positive and negative way machines can impact the environment
Positive: using cars to get around helps one get around faster Negative: cars contribute to climate change because it releases greenhouse gases
Torque is a measure of rotational force? True or False
True
Rotary motion is movement in a linear path. True or False?
False. It is movement in a circular path.
Linear motion is movement in a circular path. True or False?
False. It is movement that occurs in a straight line.
What is the name of machines that are made up of two or more simple machines?
Complex machines
Mechanisms are systems in a machine that can modify a motion. True or False?
True
A movable pulley has a wheel that cannot move. True or False?
False. A movable pulley has a wheel that can move.
Gears are used to change what three things? Force, movement and _______.
Direction
The input component of a bicycle is __________?
The pedals
The output component of a bicycle is ________?
The back wheel
