The
first section of booklets in these resources
looked at one particular kind of energy
change – the flow of energy due
to a temperature difference. Ideas of
conservation and dissipation emerge
naturally as part of this story. The
second section extended the idea of
stores and transfers to changes involving
other kinds of store and other ways
of transferring energy. It is not so
obvious that energy is conserved in
these situations, and this section focuses
on the conservation of energy in a range
of different contexts.
The first booklet in this section (Storing
and transferring) emphasises that though
there are different kinds of energy
store and different processes of energy
transfer, they obey the same general
patterns of behaviour. The next booklet
(Some transfer devices) introduces the
idea that there are many devices that
do not themselves store energy, but
through which energy passes from one
store to another. Finally, the energy
transfer arrow representation is used
to develop the ideas of energy conservation
and dissipation, leading to the concept
of efficiency (Dissipation and efficiency).
| Booklet
10 |
| |
Storing
and transferring
The animations and practical work
show that there are different
kinds of energy store and different
processes of energy transfer,
but they obey the same general
patterns of behaviour. |
| |
| Open
booklet |
| Booklet
11 |
| |
Some
transfer devices
While energy can transfer from
store to store without the need
for any intermediate action, there
are many devices, some illustrated
in this booklet, which do not
themselves store energy but pass
it immediately between storage
systems. |
| |
| Open
booklet |
| Booklet
12 |
| |
Dissipation
and efficiency
Conservation and dissipation,
as well as storage and transfer,
are key ideas. This booklet continues
to use energy transfer arrow representation,
and takes these ideas as far as
the concept of efficiency. |
| |
| Open
booklet |
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