Braingle: 'Light Bulbs' Trivia Quiz

The common incandescent light bulb has remained relatively unchanged since its invention. How much do you know about the history and current technology of the light bulb?

Quiz ID:	#1370
Fun:	(1.92)
Difficulty:	(3.15)
Category:	Technology
Created By:	Jake

#1 Who invented the first commercially successful light bulb?

Sir Humphry Davy
Warren de la Rue
Thomas Edison
Joseph Swan

#2 What is put inside an incandescent light bulb?

Regular air
An inert gas (like nitrogen)
A vacuum (no gas)

#3 The filament inside a modern incandescent light bulb is made from what type of metal?

Your Answer: (Show Hint)

#4 In a compact fluorescent light bulb (CFL), electricity passes through the gas filled tube and produces ultraviolet light. This ultraviolet light is absorbed by a _______ coating on the inside of the tube which produces the visible light.

Your Answer: (Show Hint)

#5 LEDs are small light sources that are used in electronic devices, flashlights, and special purpose light bulbs. What does LED stand for?

Luminous Electronic Diode
Luminating Electronic Device
Light Emitting Device
Light Emitting Diode

#6 The yellow light bulbs that people sometimes put on their porch or in other outdoor light fixtures work to repel bugs.

True
False

#7 Regular light bulbs are not energy efficient. What percentage of energy, used by a 100 Watt incandescent light bulb, is converted to visible light?

#8 A compact fluorescent light bulb (CFL) is an energy efficient alternative to the regular incandescent light bulb. How much of the energy, used by a CFL, is converted to light?

#9 Replacing an incandescent light bulb with a compact fluorescent light bulb (CFL) will save you money.

True
False

#10 Replacing a single incandescent light bulb with a compact fluorescent light bulb (CFL) will reduce greenhouse gas emissions by half a ton.

True
False

Light Bulbs

#1 Who invented the first commercially successful light bulb?

#2 What is put inside an incandescent light bulb?

#3 The filament inside a modern incandescent light bulb is made from what type of metal?

#4 In a compact fluorescent light bulb (CFL), electricity passes through the gas filled tube and produces ultraviolet light. This ultraviolet light is absorbed by a _______ coating on the inside of the tube which produces the visible light.

#5 LEDs are small light sources that are used in electronic devices, flashlights, and special purpose light bulbs. What does LED stand for?

#6 The yellow light bulbs that people sometimes put on their porch or in other outdoor light fixtures work to repel bugs.

#7 Regular light bulbs are not energy efficient. What percentage of energy, used by a 100 Watt incandescent light bulb, is converted to visible light?

#8 A compact fluorescent light bulb (CFL) is an energy efficient alternative to the regular incandescent light bulb. How much of the energy, used by a CFL, is converted to light?

#9 Replacing an incandescent light bulb with a compact fluorescent light bulb (CFL) will save you money.

#10 Replacing a single incandescent light bulb with a compact fluorescent light bulb (CFL) will reduce greenhouse gas emissions by half a ton.

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