hapter 6 – sources of energy -...
TRANSCRIPT
CHAPTER 6 – SOURCES OF ENERGY
6.1 The Various Forms and Sources of Energy
6.2 Renewable and Non- Renewable Energy Resources
6.3 The Importance of Conserving Energy Sources
Energy stored in a body due to its
condition
POTENTIAL ENERGY Energy stored in a body due to its
condition or position
Energy stored in a body due to its
position
HEAT ENERGY When something gains heat energy, temperature rises and changes of state happen. Main source
of heat is the Sun. Heat energy flows from hotter region to colder
region. What are the uses of heat energy?
LIGHT ENERGY The energy gained from objects that emit light. Main source is the Sun. Light energy enters our eyes and
allows us to see.
SOUND ENERGY Is produced by vibrating objects.
Sound energy travel in waves. Sound can travel through matter but cannot
travel through vacuum.
CHEMICAL ENERGY Is the energy stored in foods, fuels and other chemical substances. Hence, it is a type of potential energy too. The stored energy is released when materials undergo chemical
reactions.
The stored energy is then
released as other forms of
energy.
ELECTRICAL ENERGY Is the energy produced by flowing electric
charges / current. It is supplied in the form of electricity which is then converted into other
forms of energy.
ELECTRICAL ENERGY Lightning too can produce electrical energy but
it can kill if passes through human’s body. Besides, electrical energy is very important for
electrical appliances to function too.