REFLECTION & REFRACTION
What law states that the angle of incidence equals the angle of reflection?
Law of Reflection
What happens when white light passes through a prism?
Light is dispersed into its component colors forming a spectrum.
Light waves are what type of wave?
Light waves are electromagnetic transverse waves.
Higher frequency means what kind of pitch?
Higher pitch
Loudness depends on this wave property
AMPLITUDE
Why does a straw look bent in water?
Because of refraction wherein the light bends when the medium changes.
Which color of visible light has the shortest wavelength?
Violet
Sound waves are what type of wave?
Sound waves are mechanical longitudinal waves.
What unit is used to measure frequency?
Hertz (Hz)
Unit used to measure sound intensity
Decibel (dB)
Name one device that uses reflection to form images.
Plane mirror, Microscope
What phenomenon creates rainbows?
Rainbows are created by the phenomenon of dispersion of light combined with refraction inside water droplets.
What is the difference between transverse and longitudinal waves?
Transverse waves vibrate perpendicular to the wave’s direction, while longitudinal waves vibrate parallel to it.
Why do thinner strings produce higher pitch sounds?
Thinner strings produce higher pitch sounds because they vibrate faster when plucked or struck, producing higher frequency and higher pitch.
Why does whispering have lower amplitude than shouting?
Whispering produces smaller amplitude vibrations of the vocal cords, while shouting produces larger ones.
Explain constructive vs. destructive interference.
Constructive interference happens when waves add up together forming brighter appearances while waves in destructive interference cancel each other resulting in darkness or dimmer light.