1. WHAT IS ENERGY? ABILITY TO DO WORK MEASURED IN JOULES (J)
WORK: TO USE A FORCE TO MOVE AN OBJECT A DISTANCE
F X d

2. WHAT ARE THE TYPES OF ENERGY?
KINETIC: ENERGY DUE TO MOTION
POTENTIAL: ENERGY DUE TO POSITION
IDENTIFY THE FOLLOWING:
CAR ROLLING DOWN A HILL
STRETCHED RUBBERBAND

3. WHAT ARE THE DIFFERENT FORMS OF ENERGY?
HEAT (THERMAL)
ELECTROMAGNETIC
CHEMICAL
NUCLEAR
MECHANICAL
SOUND
LIGHT (RADIANT)

4. THE DUALITY OF LIGHT
LIGHT IS A VIBRATION (WAVE) IN ELECTRIC AND MAGNETIC FIELDS THAT CAN TRAVEL ACROSS SPACE AS A PHOTON (PACKET OF ENERGY).
IT IS PART OF THE ELECTROMAGNETIC SPECTRUM.
LIGHT CAN BE REFLECTED, REFRACTED AND DIFFRACTED

5. WAVE PROPERTIES
WAVELENGTH (λ): DISTANCE BETWEEN TWO IDENTICAL POINTS ON A WAVE (METERS, m)
FREQUENCY (ƒ): NUMBER OF WAVES THAT PASS A FIXED POINT IN A SECOND (HERTZ, Hz)
SPEED OF LIGHT: c = ƒλ (3.00 X 108 m/s)

6. ENERGY = PLANCK’S CONSTANT (6.63 X 1034 J/s) X FREQUENCY
PARTICLE PROPERTIES
LIGHT TRAVELS IN PHOTONS (PACKETS OF ENERGY) AND CAN BE ABSORBED BY ATOMS.
PHOTOELECTRIC EFFECT: EJECTION OF ELECTRONS FROM THE SURFACE OF A METAL OR OTHER MATERIAL WHEN LIGHT SHINES ON IT (EINSTEIN)
E = h ƒ
ENERGY = PLANCK’S CONSTANT (6.63 X 1034 J/s) X FREQUENCY

7. HOW CAN A LINE SPECTRA IDENTIFY AN ELEMENT?
SPECTRUM SHOWING ONLY CERTAIN COLORS OR SPECIFIC WAVELENGTHS OF LIGHT.
EMISSION OF LIGHT FROM AN ATOM OCCURS WHEN AN ELECTRON GOES FROM AN UPPER ENERGY LEVEL TO A LOWER ONE.

8. BOHR’S ATOMIC THEORY

9. LINE SPECTRA OF VARIOUS ELEMENTS

10. USE OF LINE SPECTRA IN TECHNOLOGY