Types of energy: What is energy? Types of energy. Potential Energy Kinatic Energy Heat Energy. Tidal Energy Sound Energy Solar energy. Electrical Energy Chemical Energy Nuclear Energy

5. What is Energy?
• Energy can be defined as the ability to do work.
• If an object or organism does work (exerts a
force over a distance to move an object) the
object or organism uses energy.
• Energy can neither be generated nor it can
be destroyed. It can only be converted
from one form to another.
• For example, in a room heater, electrical
energy is converted to the thermal energy.
• Turbine converts mechanical energy stored
in steam to electrical energy.

7. Potential Energy
• Potential energy is stored energy. It is the
energy that exists within an object. It is the
stored energy of position possessed by an
object.
• Potential energy is also called gravitational
potential energy.
• For Example
• By stretching a rubber band, you give it
potential energy. A vase on a shelf has
stored potential energy. A football being
held by a quarterback has potential energy
until it is thrown and it turns into kinetic
energy.

8. Kinetic Energy
• Kinetic energy is the energy of motion. Kinetic
energy is measured by how much is work
done to put an object in motion or to rest.
• The faster an object moves, the more kinetic
energy it has.
• The greater the mass of a moving object, the
more kinetic energy it has.
• Kinetic energy depends on both mass and
velocity.

9. Ball slows down Ball speeds up

10. Example of something that have both Kinetic and
Potential Energy
• A waterfall has both kinetic and
potential energy. The water at the top of
the waterfall has stored potential
energy. Once the water leaves the top
of the waterfall, the potential energy is
changed into kinetic energy.

11. Heat Energy
• Heat, in physics, energy transferred from one part
of a substance to another, or from one body to
another, by virtue of a difference in temperature.
Heat is energy in transit; it flows from a substance
at a higher temperature that is placed in contact
with a substance at a lower temperature, raising
the temperature of the latter and lowering that of
the former, provided the volume of the bodies
remains constant. Heat does not flow from a
lower to a higher temperature unless work is
done.

12. Tidal Energy
• The energy of tides has been harnessed to produce.
• The incoming tide of the river flows through a dam, driving
turbines, and then is trapped behind the dam. When the tide
ebbs, the trapped water is released and flows back through
the dam, again driving the turbines. Such tidal power plants
are most efficient if the difference between high and low tides
is great, as in the Rance estuary, where the difference is 8.5
m (28 ft). The highest high tides in the world occur in the Bay
of Fundy in Canada, where the difference between high and
low tide is about 18 m (about 60 ft). The erection of a tidal
power plant across Passamaquoddy Bay, an arm of the Bay
of Fundy, has long been contemplated; however, the project
has not yet been begun.

14. Sound Energy
• Sound energy is the movement
molecules in the air that produces
vibrations. Alarms, music, speech,
ultrasound medical equipment all use
sound energy. VCR tapes change sound
energy into electrical energy. The
electrical energy records the sound
using magnetic tape. Speakers read the
magnetic tape and change it back into
sound. No sound in space

15. Different Sounds
Different sounds produce different waves
Flute
Clarinet Violin
Trumpet

16. Solar Energy
• Solar Energy, radiant energy produced in the
Sun as a result of nuclear fusion reactions. It is
transmitted to the Earth through space by
electromagnetic radiation in quanta of energy
called photons, which interact with the Earth’s
atmosphere and surface.

17. Solar Plate And Solar Heating

18. Electrical energy is the movement
of elections. Lightning and static
electricity are examples of
electrical energy that occur
naturally. Science hasn't found a
way to use natural forms of
electrical energy, like lightning.
Instead, we use different energy
sources to create electrical energy
by using generators and turbines.

19. Chemical energy is the energy stored in
the bonds of atoms and molecules. This a
form of potential energy until the bonds
are broken. Fossil fuels and biomass store
chemical energy. Products that contain
chemical energy include: TNT, baking
soda, and a match. Biomass, petroleum,
natural gas, propane and coal are
examples of stored chemical energy.

20. Nuclear energy is the energy stored
in the nucleus of an atom. Nuclear
energy is unusual in that it can give
off energy in the form of light or
heat, but it is the change in the
atom's makeup that produces the
energy. Submarines, power plants,
and smoke detectors all use nuclear
energy. Nuclear power plants use
uranium, a radioactive element,
tocreate electricity

21. Hydroelectric power
• HEP (Hydroelectric Power) is an
environmentally friendly way to generate
electricity.

22. Advantages of Hydroelectric
power
No waste or pollution
produced.
Electricity can be
generated constantly.
Hydro-electric power
stations can increase to
full power very quickly
unlike other power
stations.
Once the dam is built,the
energy is virtually free.
Water can be stored
above the dam ready to
cope with peaks in
demand
much more reliable than
wind,solar or wave
power.

23. Thank You For
Viewing My
Presentation