Heat and Sound test Flashcards
transverse waves
light waves
longitudinal waves
sound waves
frequency is…
how often a wave occurs
unit for frequency?
hertz (Hz)
fun fact…
10hz= ten vibrations per second
if you remember this fact then click 5 if you had no clue then click 1 :D
fun fact… Higher frequency=shorter wavelength. Lower frequency=longer wavelength
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Amplitude meaning
The loudness, or amplitude, of a sound is determined by the maximum pressure of a wave.
Compression and refraction difference?
Compression= close together
Refraction= further apart/smaller
how much can humans hear up to (in Hz)
20000Hz (ultrasonic)
we cannot hear sounds below ___Hz
20Hz (subsonic)
The loudness of a sound can be measured using what? it’s a measurement/ unit of measurement
decibels (dB).
how can you make a room soundproof?
you can line the walls with foam baffles
thermal equilibrium
means when two things have reached the same temperature.
conduction
Conduction is when heat moves through something by touching it.
convection
Convection is the method of heat transfer in liquids and gases.
insulation
insulation is stuff that helps keep heat in or out, like a jacket for buildings.
radiation
Radiation is when heat moves through empty space as invisible waves, like the warmth you feel from the sun.
it works in a vacuum, no particles required
what material makes the best conductor
metals!!!!🪸
fun facts….
insulators are poor conductors
if you remember this fact then click 5 if you had no clue then click 1 XD
fun facts…
conduction can’t occur in liquids or gases
if you remember this fact then click 5 if you had no clue then click 1 XD
infrared radiation
Infrared radiation is a type of invisible heat energy that travels in waves, like the warmth you feel from the sun or a heater.
Is matte black a good reflector, good absorber or emmiter?
Good absorber and good emmiter
is shiny silver a good reflector, good absorber or emmiter?
just a good reflector
💕🥞🍜🍯
