Nuclear energy can be produced naturally through nuclear reactions in stars like the Sun, or man-made through nuclear reactors in power plants. There are two types of nuclear reactions - fusion, which combines small nuclei to release energy, and fission, which splits large nuclei to release energy. Nuclear energy provides electricity for many cities but there are disadvantages like nuclear waste disposal problems and health risks from radiation exposure. While some argue nuclear power is necessary, others want to phase it out due to these risks and issues with nuclear weapons proliferation.

3. Nuclear energy is produced
naturally and in man-made
operations under human control :
• Naturally: For example, the Sun and
other stars make heat and light by nuclear
reactions.
• Man-Made: Machines called nuclear
reactors, parts of nuclear power
plants, provide electricity for many cities.
Man-made nuclear reactions also occur in
the explosion of atomic and hydrogen

4. 1) small nuclei
are combined
to release
energy.
2)large nuclei
are split to
release
energy.

5. Its Future
• Some people think that nuclear
energy is here to stay and we must
learn to live with it.
• others say that we should get rid of
all nuclear weapons and power
plants.
• Both sides have their cases as there
are disadvantages and advantages.

6. Nuclear power plants
could still produce
electricity after coal and
oil become scarce.
Nuclear power plants
need less fuel than ones
which burn fossil fuels.
Well-operated nuclear
power plants do not
release contaminants into
the environment.

7. The nations of the world now have more than enough
nuclear bombs to kill every person on Earth. The two
most powerful nations -- Russia and the United States –
Illness can strike people years after their exposure to
nuclear radiation.
Nuclear reactors also have waste disposal problems. of
people.
Nuclear reactors only last for about forty to fifty years.

8. Note
Nuclear energy from Uranium is
not renewable.
Once we've dug up all the Earth's
uranium and
used it, there isn't any
more.