all of gcse aqa physics in the subtopics broken up lesson by lesson
| Front | speed (of wave) meaning |
| Back | how fast the pattern of vibration is passed through the medium |
| Front | what does it mean for a ultrasound waves to be partially transmitted |
| Back | some are reflected, some are transmitted |
| Front | what sourcesd do we tend to use for medical tracers |
| Back | gamma emitting sources bc are less harmful/ionising than alpha and beta but do sometimes use beta, as short half life as possible so only emit radiaiton for a short period whilst we take measurements then stop being harmful |