Energy Forms and Transformations Objective: Examine the various forms of energy in order to identify and describe specific energy transformations.

Energy the “stuff” that makes “stuff do stuff” OR the ability to do work. (W=F x D) (F=force d=distance)

Types (kinds) of Energy KE (kinetic energy) PE (potential energy) There are 2 different TYPES of energy, but there are 6 FORMS of Energy. Let’s see how each of these forms are different!

Forms of energy Mechanical Heat/Thermal Chemical Electromagnetic Nuclear Electrical

Mechanical Energy Energy of motion or position Moving school bus, frog leaping, sound, wind, waterfall, compressed spring Can be KE or PE

Heat/Thermal Energy The internal motion of an objects atoms and molecules. Measured by temperature. The faster particles move, the more thermal energy they have. KE only When energy changes from one form to another, a small amount of thermal energy is always released!

Chemical Energy Energy stored by chemical bonds in an object. When bonds are broken energy is released. PE only Match, gasoline, food, coal, wood, cells in your body

Electromagnetic Energy energy that travels in waves; have electrical and magnetic properties Light, Magnetism, X-Rays, Radio waves, microwaves, ultraviolet and infrared radiation KE

Nuclear Energy Energy stored in center (nucleus) of an atom When an atom’s nucleus split apart (fission) this energy is released Fusion (forming) when several nuclei join The sun Most powerful PE only

Electrical Energy Moving electrical charges. Electricity from batteries, power lines, lightning, static shock KE

ENERGY Transformations

What is Mechanical Energy? Energy due to a object’s motion (kinetic) or position (potential). The bowling ball has mechanical energy. When the ball strikes the pins, mechanical energy is transferred to the pins!

Examples of Mechanical Energy

What is Electromagnetic Energy? Light energy Includes energy from gamma rays, xrays, ultraviolet rays, visible light, infrared rays, microwave and radio bands

What is Electrical Energy? Energy caused by the movement of electrons Easily transported through power lines and converted into other forms of energy

What is Chemical Energy? Energy that is available for release from chemical reactions. The chemical bonds in a matchstick store energy that is transformed into thermal energy when the match is struck.

Examples of Chemical Energy

What is Thermal Energy? Heat energy The heat energy of an object determines how active its atoms are. A hot object is one whose atoms and molecules are excited and show rapid movement. A cooler object's molecules and atoms will show less movement.

ELECTROMAGNETIC ENERGY QUIZ TIME! What type of energy cooks food in a microwave oven? ELECTROMAGNETIC ENERGY What type of energy is the spinning plate inside of a microwave oven? MECHANICAL ENERGY

QUIZ TIME! Electrical energy is transported to your house through power lines. When you plug an electric fan to a power outlet, electrical energy is transform into what type of energy? MECHANICAL ENERGY

QUIZ TIME! What energy transformation occurs when an electric lamp is turned on? ELECTRICAL ENERGY  ELECTROMAGNETIC ENERGY (and THERMAL ENERGY)

What type of energy is shown below? Chemical Energy

What types of energy are shown below? Electrical, Mechanical and Electromagnetic Energy

What type of energy is shown below? Chemical Energy (food)

What type of energy is shown below? Thermal & Electromagnetic Energy (Heat & Light)

Draw a flow map showing the flow of energy transformations in a car from starting vehicle to driving. You should have 5 different types of energy.

Energy Transfer Sound (mechanical) Electrical Thermal Mechanical Chemical Electrical Light (Electromagnetic)