6B CLASSIFICATION OF ENERGY

HOW ENERGY IS CLASSIFIED

• Energy is classified by how it is sensed or by its principle source.
• There are several different ways to classify energy.
• There are seven main categories: Mechanical, Radiant, Electrical,
• [cont.] Magnetic, Thermal, Acoustic, and Other.

MECHANICAL ENERGY

• Mechanical energy is energy that consists of potential amd kinetic energy.
• Elastic Potential Energy:
• When things return to its original form or state after its shape is stretched by an outside force.
• Gravational Potential Energy:
• Gravity pushes on earth with a downward vertical force.

THERMAL ENERGY

• The sum of kinetic energies of all the particles in an object is called thermal energy.
• All particles in matter possess some sort of kinetic energy.
• Heat is the movement of thermal energy into or out of a system.
• Heating is the process of gaining thermal energy.
• Cooling is the process of loosing thermal energy.

ACOUSTIC ENERGY

• Acoustic Energy is the transmission of energy through matter by particle oscillation (back and forth motion).
• Acoustic energy moves in waves.
• This energy moves through the air and matter through vibrations.
• Some examples include earthquakes, bass speakers, vocal cords, bats, ultrasounds, ect.

ELECTRICAL ENERGY

• Electrical charges exert field forces on their surroundings.
• All atoms carry negative, positive, or neutral charge.
• Two objects carrying the same charge repel each other (opposites attract).
• Source of electrical energy is found in the excess, the lack, or the movement of electrons.
• Natural forms of electrical energy are lighting, electric rays, and electric eels.

MAGNETIC ENERGY

• The ability to do work through the influence of a magnetic field.
• Magnetic energy can attract or repulse.
• Magnetic energy exerts a field force.
• This energy has north (positive) and south (negative) poles.
• Some natural sources are rocks, earth, and kitchen magnets.

RADIANT ENERGY

• Electronmagnetic Energy is electric and magnetic energy in one form.
• Also called radiant energy is radiated by matter and transmitted through a vacuum.
• Visible light is the most familiar form of radiant energy.
• Other examples of radiant energy include X- rays, gamma rays, and radio rays.

OTHER KINDS OF ENERGY

• Chemical energy is potential energy stored in chemical bonds (cooking food) .
• This energy depends on the kind of atoms in an object and how they bond with each other.
• Neuclear Energy is associated with the nucleus of an atom