Revision sheets for IGCSE or GCSE physics. This series revision sheets are based on the IGCSE & GCSE syllabuses. Lots of formulas, definitions and key points to learn off. There are also accompanying test sheets to check your memorisation.
The idea is read the information and than print the quiz sheet and try the questions.
Revision Exercise five:
forms of energy: thermal (heat), light, electrical, sound, kinetic, chemical, nuclear and potential (elastic and gravitational)
Conservation of energy : energy is never created or destroyed, it changes from one form to another.
Unit of energy: joule (J)
efficiency = useful energy output / total energy output energy transfer may take place by conduction, convection and radiation
Edmund Becquerel
(Discovered solar energy)
work done = force × distance moved
W = F × d
work done is equal to energy transferred
gravitational potential energy = mass × g × height
GPE = m × g × h
kinetic energy = ½ × mass × speed2
KE = ½ × m × v2
power is rate of transfer of energy or the rate of doing work
power = work done / time taken
P = W/ t
electricity generation uses:
renewable and non-renewable resources
renewable
non-renewable resources
Quiz for revision exercise five: Energy quiz
Genius is one percent inspiration and ninety-nine percent perspiration.