Energy Resources And Energy Transfers

Question 1

Fórmula for gravitational potential energy

Answer 1

GPE = Mgh

Question 2

Fórmula for Work done

Answer 2

Work done = force x distance moved

W = f x d

Question 3

Formula for Power

Answer 3

Power = Work done/ time taken

P = w/t

Question 4

Fórmula for kinetic energy

Answer 4

KE = 1/2 x m x v^2

Question 5

Fórmula for efficiency

Answer 5

Useful energy output / Total energy output x 100%

Question 6

State how thermal energy’s may take place by radiation

Answer 6

Heat is transferred as infra red waves, waves can travel through space and be conducted.

Question 7

State how thermal energy’s may take place by convection

Answer 7

When particles with energy rise, the space left is filled with other particles. If the source of energy is gone, new particles will gain energy , which then rise and repeat

Question 8

State how thermal energy’s may take place by Conduction

Answer 8

When energy is passed from one particle to another from touch