Waves
energy
what is carried on waves
they all have the same speed
name one similarity between all em waves
because they are harmful to the environment
why should we reduce the consumption of fossil fuels
background radiation
what type of radiation is always round us
venus
what is the second planet from the sun
amplitude
what is distance from rest to crest
for cooking and mobile phones
what are microwaves used for
alcohol
stopped by aluminium
how do we know a particle emits beta radiation
asteroid belt
what is between the inner and outer (gas) planets
flash-bang method
name an experiment to find the speed of sound
a cell
what is the area round a mobile phone mast called
total stopping distance
what is thinking distance plus braking distance
half-life
what is the length of time for the radiation count to fall by half called.
varies on different planets
what is the force due to gravity on each planet
antenatal scan
what is ultrasound used for
because it has the most energy and shortest wavelength
why is a gamma ray the most dangerous
friction
which force opposes motion
radiographer
who is exposed to radiation in their job
energy source of a star
what is nuclear fusion
below 20HZ
what wavelength has infrasound
transmits energy to water particles which vibrate and heat up
how do microwaves work
resultant force
what is the overall force on an object
can never be changed
how can we change the half life of a source
redshift
how do we know that galaxies are moving away from us