Making Petrified Lightning ...with electricity??

Making Petrified Lightning ...with electricity??

Assessment

Interactive Video

Science, Chemistry, Other

1st - 6th Grade

Hard

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The video tutorial explores a creative project involving metal BBs and welding to create unique Lichtenberg figures. The instructor begins by discussing the inspiration and setup for the experiment, including the use of a high-voltage transformer to create fulgurites in sand. The main focus is on fusing steel BBs using a welder to form intricate 3D shapes. Various techniques and materials, such as silicon bronze wire and argon gas, are tested to improve the process. The video concludes with successful results and suggestions for enhancing the creations with epoxy and glow-in-the-dark pigments.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What inspired the narrator to start the project involving metal BBs?

A desire to create fulgurites

A fascination with lightning bolts and Tesla coils

An interest in industrial accidents

A need to repair a mailbox

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What natural phenomenon is similar to the project the narrator is attempting?

Tornadoes

Fulgurites

Earthquakes

Volcanic eruptions

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the main challenge faced when creating fulgurites with sand?

The sand was too conductive

The sand did not heat up enough

The sand was too rare

The sand was too fragile

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What tool does the narrator use to control the power when fusing steel BBs?

A hand switch

A foot pedal

A timer

A remote control

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the initial problem with the Lichtenberg figures created from steel BBs?

They were too three-dimensional

They were too fragile and two-dimensional

They were too colorful

They were too heavy

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How did the narrator plan to strengthen the Lichtenberg figures?

By using a larger welder

By increasing the voltage

By adding silicon bronze wire

By using thicker steel BBs

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the final method used to enhance the visual appeal of the figures?

Polishing them with a special wax

Embedding them in glass

Coating them in epoxy with glow-in-the-dark pigment

Painting them with glow-in-the-dark paint