WHAT'S A MACHINE?
What are the two types of machines?
Simple and complex machines.
Mention 3 machines that are important in history.
Planes, light bulbs, steam engines, radio and television, wheel and axel, telephone, household machines.
What are simple machines?
Machines that can transfer a force from one place to another, change the direction of a force, increase the amount of force, or increase the distance or speed of a force.
What’s a complex machine?
Two or more simple machines working together.
What’s a machine?
A device that makes it easier for us to do work.
How did steam engines contribute to society?
Because it helped to make products faster.
Mention 3 examples of a simple machine.
Wheel and axle, lever, inclined plane, pulley, screw, wedge.
Mention 2 examples of a complex machine.
Wheelbarrow and scissors.
What are tools?
They are very simple machines.
How did the radio contribute to our history?
It helped sharing information.
What´s a pulley and why is it important?
It is a wheel with a rope or chain around it. It is important because it helps us lift heavy objects.
Why is a wheelbarrow important?
Because it helps us lift heavy objects over a long distance.
Mention 3 things that machines can help us do.
Move things, lift things, carry things, build or make things.
What was the importance of the light bulbs in our history?
It helped us see at night in a safer way.
What’s an inclined plane and why is it important?
It is a surface that connects a higher point to a lower point. It is important because it helps us to move things up to a higher level or lower level.
Why are scissors considered a complex machine?
Because they have got two levers and two wedges.
Mention 3 examples of tools.
Mop, screwdriver, ruler, thermometer, knife.
Why are telephones important in history?
Because they helped communicating.
Why are wheels and axles important?
Because they help us transport heavy objects from one place to another.