The lightbulb

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