10 to the power of 4 metres. Used for communication.
Back
Card 8
Front
10 to the power of -2 metres. used to vibrate water molecules in food. might cause unwanted heating of the body.
Back
Card 9
Front
10 to the power of -5 metres. used for remote controls. Can cause burns.
Back
Card 10
Front
10 to the power of -7 metres. used for making images.
Back
Card 11
Front
tanning, looking at the skeleton, used for radiotherapy ( cancer treatment) all 3 can cause cancer.
Back
Card 12
Front
an image is formed ina plane flat mirror when the incident rays goes towards the mirror and the reflected ray comes away from the mirror.
Back
Card 13
Front
as a beam of light enters the glass block it slows down but when the beam changes direction away from the nromak the wavlength increases.
Back
Card 14
Front
the wave spreads out as it passes through a gap. The smaller the gap the more bendy the waves will be. The bigger the gap the less bendy the waves will be.
Back
Card 15
Front
the pitch of a note increases if the frequency of a sound wave increases.