Questão 1
Questão
Machines are objects that we use to save time and energy.
Questão 2
Questão
There are two kinds of machines by their complexity: simples or complex.
Questão 3
Questão
The machines never use a person´s energy.
Questão 4
Questão
The machines can use wind or water energy.
Questão 5
Questão
Many machines use electricity or electrical current.
Questão 6
Questão
The most of cars need combustible fuel to work. It's the energy for them.
Questão 7
Questão
Wheels, pulley are complex machines.
Questão 8
Questão
Mechanical machines are used to lift light objects but we don't use that to produce movement.
Questão 9
Questão
Machines make the work harder for workers.
Questão 10
Questão
We can find two kinds of mechanical machines: Manual and Automatic.
Questão 11
Questão
Machines make our life easier in the communication.
Questão 12
Questão
The structure of a machine is the skeleton of the machine.
Questão 13
Questão
The housing doesn't protect the machine.
Questão 14
Questão
Automatic machines that produce movement have a motor engine.
Questão 15
Questão
Electrical circuits and electronic circuits direct the energy to the motor and other parts.
Questão 16
Questão
Sensors don't enable the machine to receive information from the outside or inside of the machine.
Questão 17
Questão
An antenna isn't a sensor.
Questão 18
Questão
Indicators and screen give us information about how the machine is functioning.
Questão 19
Questão
Operating parts are the moving pieces os a mechanical machine.
Questão 20
Questão
Wheels and axles aren't an operating parts.
Questão 21
Questão
Gears don't need teeth or cogs to transmit movement.
Questão 22
Questão
Machines can do the work of more than one person at once.
Questão 23
Questão
Modern transportation allows us to travel far away.
Questão 24
Questão
The combustible fossil in different types of transportation is perfect for the environment.
Questão 25
Questão
Machines haven't done advances in health.