2. Many machines in one
Simple machines in cars
The cars have many simple machines with a complex machine.
-Wheel and axle:
We use for move or cross easily including the steering wheel.
-Screw:
This machine is an inclined plane passing around a cylinder or cone. A
car would fall apart without screws.
3. -Pulley:
This machines has a wheel and axle and a rope.
A car's brakes work using pulleys.
-Lever and fulcrum:
Is a rigid bar turns support by fulcrum. When we push one end of a lever
down, the opposite end moves up.
4. Complex machines in cars
When we push two or more simple machines together, we get a complex
machine. Some machines also have an engine or a motor.
-Gears:
Gears are wheels with teeth that fit together. When one wheel turns the
other one turns too, but in the opposite direction.
-Engines and motors:
Is a part of the machines. Need fuel to work.
5. Technology influences our lives
New inventions can help us.
-Is it really a phone?
The mobile phone we use to send email and find information.
-Switched on at home
We accustomed doing domestic chores.
The washing machine we use for wash clothes.
The refrigerators help form keep food longer and in good conditions.
Heating and air-conditioning we use to control temperature.
6. -Industrial changes
Companies developing new machines and changed the way students
learn. materials wich are environmentally friendly.
-Education
New technologies have also entered the classroom and changed the way
students learn.
7. -Transport
Reduced by development of high speed of trains. Vehicles are safer have
air bags of an accident.
-Free time
You watch a film at the cinema enjoy special effects fims in three
dimensions. Mobile phones allow take photos and make videos.
-Health
X-rays, CT scans are examples of technology in hospitals. Devices
measure level of glucose in blood for diabetic patients.
