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WorksheetsThe lightbulb
Total questions: 15
Worksheet time: 1hrs 6mins
Thomas Edison invented the lightbulb.
true
false
What is a “voltaic pile?"
a pile of lightbulbs
high voltage lightbulbs
a primitive battery that employed copper, zinc, cardboard, and saltwater and when engaged with copper wire at either end conducted electricity.
a movie about lightbulbs
Where does the word "volt" come from?
from the writer Voltaire
from the voltage that comes out of batteries
The force of lightning, as in lightning volt.
It was named after Italian inventor Alessandro Volta
What is a Volt?
a kind of horse
an electrical unit of measurement
a type of lightbulb
It's what you do in an election.
What was the problem with early lightbulbs?
materials would eventually become so hot that they’d burn up or melt
they were too fancy
they were too small
they weren't bright enough to light up a room
What keeps lightbulbs from burning up too fast?
science
filament
electricity
faith
In order for the filament to not burn up, what must the space inside the lightbulb not contain?
gas
heat
awesomeness
water
Decades before Edison, what did Warren de la Rue discover?
a form of electricity
the lightbulb
a high melting point
platinum filament worked better than copper filament
Why could they not use de la Rue’s model of the lightbulb?
it melted too quickly
platinum was too expensive
the bulbs were too dim
gas would get trapped in his lightbulb
What did the Sprengel air pump do?
put air into the lightbulbs
made the bulbs burn hotter
made cheaper lightbulbs
created a better vacuum in the lightbulb so they didn't burn out so quickly
What was wrong with Joseph Swan's lightbulb design?
the filament was too thick and required too much electricity
it burned so hot that it melted quickly
it was ugly and people didn't like looking at it
it was too dim, even though it worked really well
What did Edison discover because of Swan's work?
that lightbulbs needed to be bigger
that lightbulbs needs to be bright enough to light a large room at least
that lightbulbs were burning too hot and they needed to find a way to cool them down
that lightbulbs needed a thinner filament
How many materials did Thomas Edison claim to test to find the perfect filament?
6 million
600
6,000
94
What filament did Edison use that resulted in him being credited with making the first practical-use lightbulb?
platinum, but he found a way to make it cost less
metal
flax, cedar, and hickory
a thinner, higher-resistance cotton filament than the one Swan had used
How many hours did the first practical-use lightbulbs burn?
72
14.5
24
1 week
