Energy Resources And Energy Transfer

Question 1

What is the principle of conservation of energy

Answer 1

Energy cannot be created or destroyed

Question 2

What are the 8 energy stores

Answer 2

Chemical, kinetic , gravitation, elastic, thermal, magnetic, electrostatic, nuclear

Question 3

What are the 4 energy transfers

Answer 3

Mechanically, electrically , by heating , radiation (light and sound )

Question 4

What is the relationship between efficiency, useful energy output and total energy output

Answer 4

Efficiency = useful energy output / total energy output

Whole thing x100

Question 5

Describe conduction

Answer 5

When one particle gains energy and vibrates and passes it on to the next one causing it to vibrate in a cycle

Question 6

Describe convection

Answer 6

When particles rise due to being heated and take the place of other particles
As the particles move away from the heating they become more dense and sink
They then get closer to the heater and rise as hot air rises

Question 7

Describe radiation

Answer 7

Heat transfer via inferred waves