2. Energy in all Sciences  Energy is described differently in different science subjects.  It has no perfect definition.

3. Chemistry  In chemistry, it is described more on terms of chemical reactions.

4. Biology  In biology, it is described as the amount of energy that can be transferred to organisms.

5. Geology  In geology, it is described as the energy transformations on earth like volcanoes and earthquakes.

6. Meterology  With meterology, it is described as the strength of the storm.

7. Astronomy  In astronomy, it is described as the strength of the sun and even black holes.

8. Physics  In Physics, energy is the ability to do work.

9. Energy  In all sciences though, energy is always a scalar (measurable) physical quantity.

10. Conservation of Energy  Energy cannot be created nor destroyed. This is called the Conservation of Energy.  To conserve means not to waste, not to throw away. (Energy is never thrown away).  Energy always changes (passes) from one form to another.

11. Forms of Energy  Kinetic Energy  Potential Energy  Gravitational Potential Energy  Thermal Energy  Electrical Energy  Chemical Energy  Nuclear Energy

12. Kinetic Energy  Kinetic Energy is energy of motion.  When you are moving you have more kinetic energy.

13. Potential Energy  Potential energy is energy at rest.  When you are not moving, you have more potential energy.

14. Gravitational Potential Energy  Gravitational potential energy is a type of potential energy that is caused by how far from the ground the object is.  The higher the object is held from the ground, the more gravitational potential energy the object has.

15. Thermal Energy  Thermal energy is energy of heat.  You feel thermal energy from the sun, from fires, and from the heater or radiator.

16. Electrical Energy  Electrical energy is energy that can be passed to machines.  Electricity is electrical energy and is composed (made of) electrons.  Electrical energy is usually measured in watts and kilowatts.

17. Chemical Energy  Chemical energy is energy stored in food.  When chemical energy is passed, most of the energy is lost.

18. Nuclear Energy  Nuclear energy is energy that comes from radioactive material.  This energy comes from Nuclear Power plants in fission reactions where they split the atoms apart.

19. Lightning  Lightning is the electric breakdown of air by strong electric fields, or a plasma.  Lightning causes an energy transfer from the electric field to heat  Lightning causes mechanical energy (the random motion of air molecules caused by the heat), and also light.

20. Einstein  Einstein’s famous equation  E = MC 2

21. Fission  When atoms are split apart.  Fission happens in Nuclear power plants  Always think of a Dr. Pepper loosing its fizz……the gas comes apart…

22. Fusion  When atoms are fused together (put together)  Fusion happens in the sun.