Library of Congress: Who invented electric Christmas lights?

Who invented electric Christmas lights?

• Thomas Edison and Edward Johnson

• Nikola Tesla and George Westinghouse

• Alexander Graham Bell and Elisha Gray

• Guglielmo Marconi and Heinrich Hertz

Answer explanation

Thomas Edison and Edward Johnson are credited with inventing electric Christmas lights in 1882, showcasing the first string of lights on a Christmas tree, which revolutionized holiday decorations.

Which organization provided the information about electric Christmas lights?

• Library of Congress

• Smithsonian Institution

• National Archives

• American Museum of Natural History

Answer explanation

The Library of Congress is a key resource for historical information, including the history of electric Christmas lights, making it the correct choice for this question.

What was a danger of using candles on Christmas trees?

• Causing home fires

• Melting the tree

• Attracting insects

• Making the tree too bright

Answer explanation

Using candles on Christmas trees posed a significant danger of causing home fires due to the flammable nature of both the candles and the tree. This risk made it unsafe to use candles for decoration.

Who took the photograph of the National Christmas Tree in 1997?

• Carol M. Highsmith

• Ansel Adams

• Dorothea Lange

• Robert Capa

Answer explanation

Carol M. Highsmith is known for her extensive photography of American landmarks, including the National Christmas Tree in 1997. The other photographers listed are not associated with this specific photograph.

What colors were the light bulbs used on President Coolidge's Christmas tree?

• Red, white, and blue

• Green, yellow, and red

• Blue, green, and white

• Yellow, red, and blue

Answer explanation

The correct answer is 'Red, white, and blue' as these colors were specifically chosen to reflect American patriotism during President Coolidge's Christmas tree lighting.

What was required to wire electric lights before 1903?

• A plumber

• A carpenter

• A wireman

• A painter

Answer explanation

Before 1903, wiring electric lights required a wireman, as they had the specialized skills to handle electrical systems safely and effectively. Other trades like plumbers, carpenters, and painters did not possess this expertise.

Who are we grateful to for illuminating our holiday season?

• Thomas Edison, Edward H. Johnson, and Albert Sadacca

• Thomas Edison, Nikola Tesla, and Albert Sadacca

• Thomas Edison, Edward H. Johnson, and J. D. Cress

• Thomas Edison, Nikola Tesla, and J. D. Cress

Answer explanation

We are grateful to Thomas Edison for inventing the practical electric light bulb, Edward H. Johnson for creating the first electric Christmas tree lights, and Albert Sadacca for popularizing them, enhancing our holiday season.

What is the main topic of the document?

• The history of electric Christmas lights

• The invention of the light bulb

• The history of Christmas trees

• The invention of electricity

Answer explanation

The document focuses on the history of electric Christmas lights, detailing their development and significance during the holiday season, making this the main topic compared to the other options.

What type of lights are mentioned in the document?

• Candle lights

• Gas lights

• Electric Christmas lights

• Lantern lights

Answer explanation

The document specifically mentions 'Electric Christmas lights' as the type of lights, distinguishing them from other options like candle lights, gas lights, and lantern lights.