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On the move, forces
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:( Science Mapa Mental sobre On the move, forces, criado por ELZI em 08-05-2013.
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On the move, forces
Force Is measured in N Nutons
Pressure is measured in Pa Pascals
The Fist aeroplane flighs where by the Wright brothers.
It lasted 12 seconds, and only reached 3 meters high.
The First car was built in 1796 in France by Nicholas Cugnot. It went about 2 miles an hour.
A modern snowmobile, its catrpillar track are wide so, they do not sink into the ground and so they can go fast.
There are other uses of transport that are not as obvious. EG, Electricity is generated in power stations
These all need transport to build
Without power stations, noting would really work
Water and Air Resistance are types of drag.
Knower days, they design car and other vehicles more streamlines so then they can go faster and while using less petrol.
More streamlined it is , less drag on the object
Cars have deflectors on the top to get the air particles just to bounce off them.
Athletes often to the same for being as streamlined as possible
Lorries travelling at a steady speed, has a balanced force
To balance it out, the engine pushes it along
If there is less drag, the lorry will not need such a big force form the engine.
Wind can take affect on a moving object
This is called drag
The faster / stronger the wind, the slower you are made to go
Pressure effects everything
A piece of metal that can attract other metals is a magnet
This is called magnetism
Magnets only can attract certain types on metals
These are Iron, NIckel and Cobalt
Steel is a mixture of mostly iron, so it is a magnetic material too
An Electromagnet is a magnet made using electricity
It is a magnet with electricity curret flowing through it
The North and South poles of n electromagnet depend on which way the current is flowing through the wires
You can increase the strength of an electromagnet by
Increasing the number of coils of wire
Increasing the current in the wire
Using a magnetic material for the core
All different forms of transport need to be controlled, so they stay safe
Aeroplanes are controlled using special flaps on the wings and on the tail.
The Attitude describes how much the plane is tilted compared to the horizon
Ailerons are the pit at the end of the wings
The Ailerons are used to tilt the aeroplane from side to side
Forces can move objects by turning them around a pivot or fulcrum.
A long lever and par which you push down on one side you are applying an effort and the object on the other end, the object then moves up
A lever is used as a force multiplier
A small effort force has to move through a greater distance than a multipliers force
We use transport for many things, but not all of these are necessary
Almost all transport need a fossil fuel to power it
Burning fossil fuels is not sustainable, because we are using up non - renewable energy resources and contributing to global warming
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