Chapter 1 - Energy Flashcards
What is energy
energy is the capacity to do work
What is kinetic energy
it is the energy which a moving object have
It depends on the speed of the object
what is the S.I unit for energy
Joules ( J )
If the object is moving
there will be kinetic energy
if the object is stationary
there is no kinetic energy
faster the object moves
the more kinetic energy it has
what is gravitational potential energy ?
it is the energy that an object has because of its position
It also depends on the position of the object
What is potential energy
It is stored energy
what is elastic potential energy?
it is stored in objects that can be stretched , compressed or bent
what is chemical potential energy
it is the energy stored in substances such as fuels and food
What are the 3 types of potential energy
elastic, gravitational and chemical
what is thermal energy
thermal energy is the energy of an object has become because of its temperature
It depends on the temperature of the object
thermal energy travels from….
from a region of a higher temperature of a lower temperature
what are the principals of energy
energy cannot be created or destroyed and energy can be changed from one form to another
what is the energy conversion when lighting a bulb with a battery
chemical energy - electrical energy - light + heat energy
