H/W
Science Revision-Energy
23/4/22
Nine main forms of Energy
Kids Never Hate Learning GCSE Energy is a good way to
remember all forms of Energy it goes,
K-Kinetic
C-Chemical
N-Nuclear
S-Sound
H-Heat/Thermal E-Elastic
L-Light
G-Gravitational Potential
How to calculate efficiency of energy
To calculate the efficiency of energy you must divide
your useful energy by the total energy and then multiply
that result by 100, this will show you the percentage of
the efficient energy, this is used to find out how efficient
things are and how much wasted energy is released in
items, devices are made to have as little wasted energy
as possible to make it as efficient as possible.
How to calculate Work Done
The calculation for work done is Force (N) x Distance (M)
= Work Done (J) there is also a work done triangle
Work Done divided by the Force
equals the Distance, Work Done
divided by the Distance equals the
Force and Force multiplied by
Distance is the Work Done.
Energy Transfers
Energy Transfers is when one energy store transfers into
another energy store for example when you run the
energy stored is Chemical Energy which is inside your
muscles transfers into Kinetic Energy once you start
running.
Power
Work Done divided by Time is Power, Power is measured
in Newtons (N), Work Done divided by Power is Time
which is mostly measured with seconds minutes and
hours, and finally Time multiplied by Power is Work
Done which is measured in Joules (J).