Energy Transfer Flashcards Preview

GCSE Physics*** > Energy Transfer > Flashcards

Flashcards in Energy Transfer Deck (9):
1

What is the principle of conservation of energy ?

Energy cannot be created or destroyed only transferred from one form to another

2

What are the nine different energy forms ?

• sound energy
• light energy
• elastic potential
• electrical energy
• kinetic energy
• Chemical potential
• nuclear potential
• Thermal energy
• gravitational potential

3

Equation for efficiency


Useful energy output
Efficiency = -------------------
Total energy input



X 100 to get %

4

What diagrams can represent input, output and waste energy ?

Sankey diagrams

5

What is proportional in a Sankey diagram ?

The arrow size is proportional to the amount of energy that it indicates

6

What is conduction ?

When vibrating atoms pass on the kinetic energy to the atoms nearest them

7

What is convection ?

When hotter less dense fluid rises and cold more dense fluid sinks, this creates convection currents

8

What is radiation ?

Energy is transferred by electromagnetic waves

9

What are different methods to insulate homes ?

• double glazing
• cavity wall insulation
• Floor insulation
• draft excluder