Lightbulbs Flashcards
1
Q
What was the most difficult part of inventing a lightbulb?
A
finding the right material to make the filament of the bulb.
2
Q
What is the filament of a light bulb?
A
the filament is the part of the bulb through which the electrons flow
3
Q
How is a light bulb similar to a toaster?
A
the filament gets hot and glows which throws off light
4
Q
Why doesn’t the filament melt when it gets white-hot?
A
it is made of tungsten which has high resistance so doesn’t melt
5
Q
How big is the filament?
A
the filament is as thin as a hair and is wound into a coil
6
Q
What else is inside a light bulb?
A
a special kind of gas to keep the filament from burning away and helps the bulb to last a long time
