PERIODIC MOTION/WAVES
Motion that repeats in equal time intervals
PERIODIC MOTION
medium where sounds can travel
Solid liquid Gas
Accumulation of electric charges on an object
Static electricity
an object that can attract certain types of metals such as iron, nickel, and cobalt.
magnets
Another term for electromagnetic waves
EM RADIATION
TWO EXAMPLE OF PERIODIC MOTION
Where does sound cant travel
Empty Space
How does object become charged?
Electrons transfer between materials
force that attracts or repels materials
Magnetism
a special kind of energy that travels in waves through space.
EM RADIATION
The type of oscillator where energy is added to maintain motion
Driven
Explain longitudinal waves
This means particles move back and forth in the same direction as the wave.
Force between charged objects
Electric Force
Where does magnetic field mainly strong at?
Poles (North and South)
Speed of Light
3.00 × 10⁸ m/s
Differentiate mechanical and electromagnetic wave
Require a medium
Do not require a medium
Explain the speed of sounds in diff mediums
Fastest → Solids
Medium → Liquids
Slowest → Gases
What are the three charging methods discussed?
Friction, induction, Convection
Explain the right hand rule
Relationship of wavelength and frequency
Explain the 5 anatomy of waves
CREST
The highest point of the wave above the rest (equilibrium) position.
TROUGH
The lowest point of the wave below the rest position.
AMPLITUDE
The height of a crest (or the depth of a trough) measured from the rest position.
WAVE HEIGHT
The vertical distance from a trough to the next crest.
WAVE LENGTH
The distance between two consecutive crests or two consecutive troughs.
Importance of understanding sounds.
Answer may vary.
Differentiate AC and DC
Direct Current (DC):
Alternating Current (AC):
Explain how transformer works.
Types of EM Radiation and example
Radio Waves- RADIO
Micro Waves- Microwave ovens
Visible- rainbow
UV- coming from sun
X-ray- X-ray machine
Gamma- used in nuclear radiation