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WorksheetsUsing Machines
Total questions: 25
Worksheet time: 25mins
What do machines convert input work to?
output force
output distance
input distance
output work
An efficiency of more than one means
the output force is greater than the input force
the input force is greater than the output force
the output work is greater than the input work
the input work is greater than the ouput work
What is the MA of a machine that increases an input force of 5N to an output force of 15N?
1
3
75
How can a machine make work easier without changing the size of the force or the distance over which the force acts?
It can't.
By decreasing friction.
By changing the direction of the force.
By reducing the amount of work needed.
Which of the following is a measure of a machine's efficiency?
The amount of energy it consumes
The ratio of useful work output to total work input
The speed at which it operates
The size of the machine
Select the vocabulary word that matches with the definition below:
A machine that changes something by a special treatment or takes care of something according to a routine.
Seleccione la palabra de vocabulario que coincida con la siguiente definición:
Una máquina que cambia algo por un tratamiento especial o se encarga de algo de acuerdo con una rutina.
以下の定義に一致する語彙を選択します。
特別な扱いで何かを変えたり、ルーチンに従って何かを世話したりする機械。
PROCESSOR
INTERACTION
MICROCONTROLLER
INTERFERENCE
What is a lever?
A type of pulley
A simple machine that consists of a rigid bar pivoted on a fulcrum
A device that measures force
A type of inclined plane
In how many ways can a machine make work easier?
1
2
3
5
…. is a something that makes work easier to do.
Energy
Work
Swing
Machine
What statement is not true about machine?
Machines change the way you do the work
Some machines change the direction in which you push or pull
Some machines help you use less force to do work
A machine makes work more difficult to do
.... are machines with few or no moving parts
compound machine
wedge
energy
simple machines
A compound machine is ...
no moving parts
made of one part
two or more simple machine put together
A ... is a simple machine that splits objects apart.
furclum
can opener
wedge
compound machine
.... is a simple machine with a flat, slanted surface
screw
wedge
an inclined plane
a furclum
Most of tools you used everyday are
work
tools
simple machines
compound machines
.. is an inclined plane wrapped into a spiral
lever
wedge
screw
air plane
... is a straight bar that moves on a fixed point
a fulcrum
a wedge
a lever
a wheel
A device that has two or more simple machines working together
fulcrum
pulley
compound (complex) machine
motor
What do you call a machine made up of two or more simple machines?
complicated machine
compound or complex machine
comprehensive machine
constructive machine
What is a compound machine?
uses a wheel and rope to lift a load
wheel that turns on a post
flat surface that is higher at one end
made from two or more simple machines
What simple machines make up a pair of scissors?
Pulley and Wedge
Wheel and Axel and Lever
Pulley and Screw
Wedge and Lever
What is the primary function of a simple machine?
To increase the amount of work done
To change the direction of a force
To decrease the amount of energy used
To increase the speed of an object
Which of the following is an example of a lever?
A ramp
A seesaw
A wheelbarrow
A screw
How does a pulley system make lifting a load easier?
By increasing the force applied
By changing the direction of the force
By reducing the weight of the load
By increasing the distance over which the force is applied
In an experiment, a student uses a ramp to lift a box. What type of simple machine is the ramp?
Lever
Pulley
Inclined plane
Wedge
