Energy Transfers Flashcards
1
Q
What are some of the different types of energy (6)
A
Heat Kinetic Gravitational potential Sound Chemical Light
2
Q
What is the principal for conservation of energy
A
The idea that energy can not be destroyed or created but can be converted from one form to another
3
Q
What does a snakes diagram show
A
They show the flow of energy in a process with the type of energy we want at the top and wasted energy at the bottom
4
Q
What is the equation for efficiency
A
Efficiency(%) =
Energy output/total input x 100
5
Q
What does efficiency mean
A
The fraction of the energy supplies to a device which is transferred in a useful form
6
Q
What is radiation
A
The emission of heat energy into the atmosphere
7
Q
What colours are the best absorbers of heat
A
Black and matt colours
8
Q
What are the worst surfaces for the intake of heat
A
Light and shiny surfaces
