The Light Bulb Amplify

_______________ invented the light bulb.

Why did people stop doing things after sunset before the light bulb?

• People stopped because it was too dark to see and it was dangerous.

• There were too many insects at night.

• They preferred to sleep in the dark.

What are two problems with candles and wood fires as light sources?

• They smelled nice and were easy to find.

• They were too bright and hurt people's eyes.

• • They didn’t provide much light and could cause fires.

What was a major issue with using candles for light?

• Candles were too ugly to have at home.

• Candles made the room too cold.

• • Candles burned out quickly and didn’t light up a room well.

What was wrong with the filaments in early electric lights?

• • They could catch fire easily and burned out fast.

• They were made of glass and broke easily.

• They were too thick and took up too much space.

How did the invention of the light bulb change how people did business?

• • It allowed businesses to operate at night and sell electricity.

• It stopped people from working during the day.

• It caused businesses to use more candles instead.

What are some things people can do at night because of the light bulb?

• People can sleep outside in the dark.

• People can read, go to concerts, and have sleepovers.

• People can play sports only in the daytime.

Name two ways people use to lit their homes before the lightbulb was invented.