Should have all the cards for the Edexcel physics. It should, though, work for most other specs. I stole most of these cards, so thanks to the original creators lol
| Front | Which surfaces are the worst absorbers, worst emitters and best reflectors of infrared radiation? |
| Back | White shiny surfaces are the worst absorbers, worst emitters and best reflectors of infrared radiation. |
| Add Reverse |
| Front | Why are decorative lights often wired in series? |
| Back | Because each bulb only ususally needs a low voltage, so even when the voltage from the mains supply is 'shared' out between them, each bulb still gets enough energy to produce light. Unfortunately, if the filament in one of the bulbs breaks, then all the other bulbs will go out. |
| Front | What is a light-depedant resistor (LDR)? |
| Back | A light dependant resistor is a resistor whose resistance changes when light is shone on it. In the dark its resistance is high but when light is shone on it its reistance decreased. |