Sound
Take a tuning fork and strike it
against a block of wood.
What do you observe?
The tuning fork vibrates
and you hear a sound.
what is the law of conservation of an energy
energy cannot be created or destroyed it can only change one form to another form
what is an evaporation
evaporation is the change of state from liquid to gas
Peak/crest
highest point of a transverse wave
How many waves Sound have and what is/are them/it
Longitudinal and Transverse
who is James joule
Energy is measured in units called
joules (J). James Joule made
important discoveries about energy
in the 19th century.
In what direction are the water particles moving?
random
Trough
lowest point of a transverse wave
What is an osciloscope
An oscilloscope shows the wave patterns and allows us to see sound
what is the difference between heat and temperature
heat is the total thermal energy in
an object, which is the total
energy of all the particles
temperature is the average
energy of the particles in an
object.
give 5 examples of which they do not have sea of electrons
any 5 insulators
Wavelength
the distance between two peaks or two
troughs
When does the cancellation method appear?
when they meet peaks and troughs together
why we cannot hear voice that is coming from another country
it can only change one form to another
describe fluid movement
warmer rises up, cooler sink
Rare faction
where the coils are further apart than the normal
the effectthat is produced when two waves met with each other is called ....
interference
Who is the Kelwin
Mr Kelwin is a scientist who discovered as the temperature decrease particles move slowly
find the unknown word "When the metal is heated, this ‘sea of electrons’ gain ............... energy and transfer it throughout the metal".
kinetic
Compression
where the coils are closer together than the normal