ENERGY FORMS AND TRANSFORMATIONS ENERGY is The ability

ENERGY: FORMS AND TRANSFORMATIONS

ENERGY is… The ability to cause change.

FORMS OF KINETIC ENERGY: 1. Mechanical: energy that moves an object. 2. Sound: energy caused by vibrations

3. Thermal: heat energy from the movement of molecules.

4. Electrical: energy caused by the movement of electrons through a conductor.

5. Radiant (Electromagnetic): energy that travels in the form of electromagnetic waves.

TYPES OF ELECTROMAGNETIC ENERGY: Radio waves Microwaves Infrared radiation Visible light Ultraviolet rays X-rays Gamma rays

6. Chemical: energy stored in the bonds between atoms; released during chemical reactions. Examples: food, fuel, batteries

7.

TYPES OF NUCLEAR ENERGY: FISSION: occurs when one large nucleus splits into 2 smaller nuclei. FUSION: occurs when 2 smaller nuclei join to make one larger nucleus.

The Law of Conservation of Energy The law states that energy cannot be created nor destroyed, it can only change forms.

Energy Transformations… http: //app. discoveryeducation. com/player/view/asset. Guid/20 AE 862 C-6 D 4 F-47399 CD 9 -CE 861 FF 42 A 97

An energy transformation occurs when energy changes from one form to another. In a television, electrical energy turns into light, heat and sound energy.

Energy Transformations Example: Batteries are a source of chemical and electrical energy. 1. Chemical energy stored in the battery is transformed into electrical energy (electricity) as electrons move through the wire. 2. Electrical energy is transformed into radiant (light) energy and thermal (heat) energy in the lightbulb.

More Energy Transformation Examples: The molecules in food have chemical energy. We transform this energy into mechanical, thermal, electrical and energy. Wood stores chemical energy and as it burns, chemical energy is converted to thermal energy and light energy. During photosynthesis, plants convert radiant energy (from the sun) into chemical energy in the form of glucose (sugar).

Examples: TV: electrical energy→ electromagnetic energy → sound energy → thermal energy LIGHT BULB: electrical energy → electromagnetic energy → thermal energy MATCH: chemical energy → electromagnetic energy → thermal energy CAR: chemical energy → mechanical energy → sound energy → thermal energy

YOUR TURN!! Name the energy transformations below!! Cooking on the stove Growing flowers Running Phone charging