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WorksheetsMachines and Their Impotance
Total questions: 50
Worksheet time: 30mins
Work is_________.
a way to transfer energy from one body to another.
the energy related to movement.
the energy related to energy stored.
Kinetic energy is_____________.
states that the energy is not created or destroyed: it only transforms.
the energy related to energy stored.
the energy related to movement.
Potential energy is____________.
the energy related to movement.
the energy related to energy stored.
a way to transfer energy from one body to another.
Law of Conversation of Energy is ___________.
the energy related to movement.
a way to transfer energy from one body to another.
the energy related to energy stored.
states that the energy is not created or destroyed: it only transforms.
The more potential energy or kinetic energy an object has, the more ability it will have to produce a change; in other words, it will have a greater ability to do work.
True
False
Choose the ones that are correct for machines.
are the instruments that allow us to do a job with less effort.
Are used to change the direction of force or reduce the amount of force that we apply.
The purpose is always for the work to cost us less effort, make it easier, and also safer.
None of the above
Effort is____________
are the instruments that allow us to do a job with less effort.
the result of the force we exert when we realize a work with a machine.
the energy related to energy stored.
Characteristics of Machines are___________.
They run on energy.
They transform the energy they receive.
They energy they receive for their operation is not fully exploted, part of it is lost through friction
All of the above
A bicycle is a machine that people use to transport themselves from one place to another, quickly and easily.
simple machine
compound machine
Machines allow us to move giant object over long distance. The photograph shows how they help transport a section of a rocket.
simple machine
compound machine
Simple Machines - Lever
Is the machine that humans have use the most since the beginning of its history.
It consist of a rigid bar that is free to move on a point of support, called the fulcrum.
None of the above
Simple Machines - Lever
Simple Machine - Lever
Compund Machine
Compound Machine
Simple Machine - Lever
Simple Machine - Lever
Compound Machine
Simple Machine - Lever
Simple Machines - Inclined Plane
Is basically a ramp: a flat surface that is raised at only one end.
It reduces the effort that is required of us, but increases the distance over which we have to exert the effort.
Compound Machine
Simple Machine - Inclined Plane
Simple Machine - Inclined Plane
Compound Machine
Compund Machine
Simple Machine - Inclined Plane
Simple Machines - Wedge is________
Is an object, or part of an object, that ends in an acute angle.
It’s a movable, double inclined plane
Are used to cut or separate things.
None of the above
Compound Machines
Simple Machines - Wedge
Simple Machines - Wedge
Compound Machines
Simple Machines - Screw is___________.
Is a machine that can be used to drill surfaces and fasten things together.
It consists of an inclined plane that forms a spiral around a cylindrical body.
Are used to cut or separate things.
It’s a movable, double inclined plane.
Simple Machines - Screw
Compound Machines
Simple Machine - Screw
Compound Machine
Simple Machines - Nut and Bolt is ___________
It’s a movable, double inclined plane.
It can be used to clamp things between the nut and the bolt to be able to create structures.
Are used to cut or separate things.
Is basically a ramp: a flat surface that is raised at only one end.
Simple Machines - Nut and Bolt
Simple Machines - Screw
Simple Machines - Wedge
Simple Machine - Inclined Plane
Simple Machines - Inclined Plane
Simple Machines - Wedge
Simple Machine - Nut and Bolt
Simple Machine - Screw
Simple Machines - Pulley is____________
It’s made of a rope or cable that goes around a wheel.
Reduce the effort we exert on a task because they reduce the amount of force needed to move an object.
Are used to cut or separate things.
Simple Machines - Pulley
Simple Machine - Screw
Simple Machine - Nut and Bolt
Simple Machine - Wedge
Simple Machine - Wedge
Simple Machine - Screw
Simple Machine - Pulley
Compound Machine
Simple Machine - Screw
Simple Machine - Wedge
Simple Machine - Nut and Bolt
Simple Machine - Pulley
Simple Machines - Wheel and Axle is_______
Consists of two circular objects of different sizes.
The larger object, which is called a wheel, spins around the smaller one.
The smaller one is the axle.
None of the above
Simple Machines - Wheel and Axle
Simple Machine - Screw
Simple Machine - Pulley
Simple Machine - Nut and Bolt
Simple Machine - Wedge
Simple Machine - Nut and Bolt
Simple Machines - Wheel and Axle
Compound Machine
Compound Machine
Simple Machine - Wedge
Simple Machines - Wheel and Axle
Simple Machine - Pulley
Simple Machines - Wheel and Axle
Simple Machine - Pulley
Simple Machine - Wedge
Simple Machine - Inclined Plane
Compound Machine is____________
Is a machine that is composed of two or more machines.
The combination of several simple machines allows humans to perform much more complex tasks or work faster or with less effort.
Are used
to cut or separate things.
In this case it has a wedge, a lever, and a screw. Other have also a wheel and axle.
The can opener is a compound machine.
The electric motor is a compound machine because of the many components it has.
The blades rotate around a wheel and axle.
Also the handle works as a lever.
None of the above
The electric motor is a compound machine because of the many components it has.
It transforms electrical energy into movement.
None of the above
What are the groups of machines?
Simple Machine
Compound Machine
None of the above.
Choose the ones that belong to simple machines.
Bike
Lever
Car
Pulley
Choose the ones that belong to simple machines.
Wheel and Axle
Nut and Bolt
Inclined Plane
Screw
Choose the ones that belong to simple machines.
Lever
Wedge
Wheel and Axle
Nut and Bold
Choose the ones that belong to compound machines.
Bike
Car
Can opener
Motor
Machine and Transportation
The impact of the wheel on the development of transportation and agriculture, was so great that it allowed the evolution of other more complex machines.
True
False
Machines and Transportation
At the beginning it started with steam machines.
True
False
Currently most of the transportation machines have internal combustion engines.
True
False
