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Understanding the World's Roundest Object

Understanding the World's Roundest Object

Assessment

Interactive Video

Physics, Science

7th - 10th Grade

Practice Problem

Hard

Created by

Aiden Montgomery

FREE Resource

The video introduces the world's roundest object, emphasizing its precision and uniqueness. Made from pure silicon-28, it is so round that if scaled to Earth's size, no feature would exceed 10 meters. The object, costing over a million euros, plays a crucial role in redefining the kilogram.

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial request made in the conversation?

To hold the world's roundest object

To buy the object

To measure the object

To sell the object

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the world's roundest object compared to Earth?

It is smaller than a grain of sand

It is larger than Earth

It is as flat as a pancake

It has no mountain or valley bigger than 10 meters

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What material is the world's roundest object made from?

Gold

Diamond

Silicon-28

Iron

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the cost of the raw material used for the object?

More than a million euros

Two million euros

Less than a thousand euros

Exactly a million euros

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of creating the world's roundest object?

To be used in jewelry

To be a museum exhibit

To redefine the kilogram

To serve as a paperweight

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