CKLA 4th Grade Unit 4 The Lightbulb Eureka!

Front

What was the main reason Thomas Edison started a company to supply electricity?

Back

He realized the potential in selling both light bulbs and electricity.

Front

What were some drawbacks of early sources of light before the light bulb?

Back

They were expensive, unreliable, and very dim.

Front

What is the role of the filament in a light bulb?

Back

To create light when heated.

Front

How did Thomas Edison's light bulb differ from previous electric lights?

Back

It was more reliable and brighter.

Front

Which invention is NOT mentioned as made possible by the light bulb?

Back

The telephone.

Front

What is a light bulb?

Back

A device that produces light when electricity passes through it.

Front

What is electricity?

Back

A form of energy resulting from the existence of charged particles.

Front

What does the term 'filament' refer to in a light bulb?

Back

The thin wire inside the bulb that glows to produce light.

Front

Why were early light sources considered unreliable?

Back

They often failed to provide consistent light and could be dangerous.

Front

What is the significance of Thomas Edison's invention of the light bulb?

Back

It revolutionized how people used light in their homes and businesses.